电线电缆网 > 线缆原材料 > 美国宇航局工艺标准:电缆和线束,通用规范 参考(完整版)

美国宇航局工艺标准:电缆和线束,通用规范 参考 - 无图版

Tinselwire --- 2022-01-18 07:57:54

1

    美国宇航局工艺标准:电缆和线束通用规范

    电缆和线束通用规范
    cables and harnesses
    电缆和线束通用规范

    Often the most overlooked and ignored component of any electrical/electronic design, 电缆和线束es are essential to the accurate and rapid transmission of data and control signals.

    connector backshellharness in bend radius

    PREFERRED

    BACKSHELL

    Connector backshells shall be potted and molded, or use stress relief boots as required, in accordance with applicable engineering documentation.

    NASA-STD-8739.4 [13.1.1.c]

    PREFERRED

    BEND RADIUS

    Cables and harnesses shall not be subjected to bending forces resulting in radii less than the minimum specified for the most sensitive component (i.e.: coaxial, fiber, etc.) in the assembly.

    Best Workmanship Practice

    coaxial and fiber optic cablecoaxial and fiber optic cables

    PREFERRED

    COAXIAL/FIBER OPTIC CABLE LOCATION

    Harnesses should be designed so that coaxial/fiber optic cables are located at or near the bundle center to minimize flexure and to provide additional protection.

    Best Workmanship Practice

    PREFERRED

    COAXIAL/FIBER OPTIC CABLES

    Coaxial cable (flexible, semi-rigid, rigid) and fiber optic cables shall exhibit a neatly organized layout, with smooth bends and sufficient stress relief.

    Best Workmanship Practice

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    1





    电缆和线束通用规范 (cont.)
    preferred connectordiscrete wire harnesses

    PREFERRED

    CONNECTOR STYLE

    Connectors shall be straight, right-angle or flange-mount. The use of right-angle connectors shall be minimized and restricted to applications where stress-free mounting of the cable assembly can be assured.

    Best Workmanship Practice

    PREFERRED

    DISCRETE WIRE HARNESSES

    Harnesses exhibit a neatly organized layout with smooth bends and sufficient stress relief. Connector cable clamps and cable straps are properly set.

    NASA-STD-8739.4 [19.6.1.e]

    dust capshybrid cables and harnesses

    PREFERRED

    DUST CAPS

    The mating surfaces of all unmated connectors shall be protected by covers during storage, handling and installation. Connectors on ESD sensitive hardware shall be protected by ESD rated dust caps/covers.

    NASA-STD-8739.4 [13.1.2], [16.2.4], [16.3.3]

    PREFERRED

    HYBRID CABLES/HARNESSES

    Hybrid cables/harnesses (copper/fiber optic/coaxial conductors) shall be designed to comply with the requirements of the most sensitive and demanding component (typically the fiber optic cable) in the assembly.

    Best Workmanship Practice

    identification markings on cables and harnessesidentification on connector

    PREFERRED

    IDENTIFICATION
    CABLES/HARNESSES

    Each cable/harness shall be identified by a permanent label/marking.

    NASA-STD-8739.4 [14.2.1]

    PREFERRED

    IDENTIFICATION
    CONNECTOR

    Each connector shall be identified by a permanent label/marking affixed directly to the connector body, or to the cable adjacent to the connector.

    NASA-STD-8739.4 [14.2.2]

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    2





    电缆和线束
    GENERAL REQUIRMENTS (cont.)
    polarizationribbon cable

    PREFERRED

    POLARIZATION/KEYING

    Interconnecting cables and harnesses shall be designed with physical constraints (keying, sizing, polarization, etc.) to prevent incorrect mating/interchanging with similar sized/colored connectors.

    NASA-STD-8739.4 [7.1]

    PREFERRED

    RIBBON CABLE

    The cable assembly meets dimensional, layout and design requirements and exhibits a smooth, flat profile with no visible damage to the connectors or the insulation. Connectors are properly aligned and seated.

    Best Workmanship Practice

    floating shield terminationgrounded shield termination

    PREFERRED

    SHIELD TERMINATION - FLOATING

    Heat shrink tubing is properly installed, tightly shrunk and the termination is visible. Overlaps are of sufficient length to meet minimum electrical spacing.

    NASA-STD-8739.4 [9.8.1], [9.9], [11.5], [19.6.1]

    PREFERRED

    SHIELD TERMINATION - GROUNDED

    Heat shrink sections are properly installed, tightly shrunk and the termination is visible. Overlaps meet minimum electrical spacing. Ground wire exhibits proper bend radius and strain relief.

    NASA-STD-8739.4 [7.3.22], [9.8.1], [9.9], [11.5], [19.6.1]

    spot tiesbackshell assembly

    ACCEPTABLE

    SPOT TIES

    Spot ties shall consist of a clove hitch, followed by a square or other similar non-slip knot (i.e.: surgeon, etc.).

    NASA-STD-8739.4 [9.2.2]

    ACCEPTABLE

    BACKSHELL ASSEMBLY

    Connector backshells, adapters and clamps shall be assembled and torqued per engineering documentation.


    NASA-STD-8739.4 [13.5]

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    3





    电缆和线束通用规范 (cont.)
    backshell screwexcessive thread protrusion

    ACCEPTABLE

    BACKSHELL SCREW PROTRUSION

    Screws shall protrude a minimum of 1-1/2 threads beyond the threaded hardware (e.g., nut, clamp, etc.), but shall not violate minimum electrical spacing or snag requirements, unless otherwise specified by engineering documentation.

    Best Workmanship Practice

    UNACCEPTABLE

    EXCESSIVE THREAD PROTRUSION

    Excess thread protrusion represents an assembly, interference and electrical separation problem, as well as adds unnecessary weight to the assembly.

    Best Workmanship Practice

    breakout dress with fabric braidsplit braiding at breakout

    ACCEPTABLE

    BREAKOUT DRESS W/ FABRIC BRAID

    Braiding shall be dressed to form a smooth profile across the breakout. Braiding shall not be split, slit or punctured to provide a breakout opening.

    NASA-STD-8739.4 [9.3]

    UNACCEPTABLE

    SPLIT/SLIT BRAIDING AT BREAKOUT

    Braiding shall not be split, slip or punctured to provide an opening at the breakout.

    NASA-STD-8739.4 [9.3]

    cable lacing and running stitchcable layup

    ACCEPTABLE

    CABLE LACING
    RUNNING STITCH

    The lacing begins and ends with a knot. Wraps are properly spaced (relative to harness diameter) to maintain the wiring in a tight, neat bundle. Ends are properly trimmed.

    NASA-STD-8739.4 [9.2]

    UNACCEPTABLE

    CABLE LAYUP

    Cables containing discrete conductors shall be fabricated in one or more layers, by winding the conductors together uniformly. Layup (twist) of each layer shall be 8-16 times the outer harness diameter.

    NASA-STD-8739.4 [7.3.20], [19.6.1.e.4]

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    4





    电缆和线束通用规范 (cont.)
    cable lacing and spot tiesloose cable lacing

    ACCEPTABLE

    CABLE LACING
    SPOT TIES

    Ties are neat, tight and properly spaced (relative to harness diameter) to maintain the wiring in a tight, neat bundle. Ends are properly trimmed.

    NASA-STD-8739.4 [9.2.2]

    UNACCEPTABLE

    LOOSE CABLE LACING

    The lacing has not been properly installed, resulting in a loose, unorganized bundle.

    NASA-STD-8739.4 [19.6.2.d.4]

    cable strap with metal tangsconductor dress

    ACCEPTABLE

    CABLE STRAPS/TIES

    Plastic straps should have metal tangs that lock securely into the ribbed portion of the strap.

    NASA-STD-8739.4 [7.3.4]

    ACCEPTABLE

    CONDUCTOR DRESS

    All wires are dressed with even bends and sufficient strain relief. Conductor crossover is minimized.

    NASA-STD-8739.4 [19.6.1.e]

    cable ties and wrapsuntrimmed cable ties

    ACCEPTABLE

    CABLE TIES/TIE WRAPS

    The cable ties/tie wraps are sufficiently tight to prevent lateral movement along the cable bundle under normal handling, but can be rotated in place. Strap ends have been trimmed off square and flush with the face of strap head.

    NASA-STD-8739.4 [9.6]

    UNACCEPTABLE

    UNTRIMMED CABLE TIES

    The strap end shall be trimmed off, flush with the back end of the strap head.

    NASA-STD-8739.4 [9.6], [19.6.2.d.5]

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    5





    电缆和线束通用规范 (cont.)
    connector saversdirect weave fabric braid

    ACCEPTABLE

    CONNECTOR SAVERS

    The use of connector savers is recommended. Connector savers shall meet the same requirements as a flight connector.

    NASA-STD-8739.4 [17.2.7]

    ACCEPTABLE

    DIRECT WEAVE FABRIC BRAID

    Fabric braids woven directly on interconnecting harnesses or cables may be loose or tight. The finish shall be smooth, without gaps in coverage, and without frayed ends.

    NASA-STD-8739.4 [9.4]

    scuffing on connectordiscoloration on insulation

    ACCEPTABLE

    DISCOLORATION/SCUFFING
    CONNECTOR

    Slight scuffing or discoloration is acceptable, provided there is no impact to form, fit or function, and there is no exposure of base metal.

    Best Workmanship Practice

    ACCEPTABLE

    DISCOLORATION/SCUFFING
    INSULATION

    The cable does not exhibit evidence of insulation damage, such as cuts, nicks, scrapes, crushing, cold flow or burns. Slight scuffing or discoloration is acceptable.

    NASA-STD-8739.4 [19.6.2.e.9]

    fabric braided sleevingfabric braid sleeving

    ACCEPTABLE

    FABRIC BRAIDED SLEEVING

    Prewoven fabric (unvarnished) braid sleeving may be installed over the wire harness. Sleeving shall be snug, secured at both ends and shall not slide freely. Ends shall not be frayed or unraveled, and shall be tucked under.

    NASA-STD-8739.4 [9.3]

    ACCEPTABLE

    FABRIC BRAID SLEEVING
    ALTERNATE END DRESS

    The end of the braid may be secured by connector clamps, other hardware or potting.

    NASA-STD-8739.4 [9.3.2]

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    6





    电缆和线束通用规范 (cont.)
    fabric braid sleevingglass braid sleeving

    ACCEPTABLE

    FABRIC BRAID SLEEVING
    BASIC END TERMINATION

    The end of the braid shall be tucked under and secured with a spot tie or plastic strap.

    NASA-STD-8739.4 [9.3.1]

    ACCEPTABLE

    GLASS BRAID SLEEVING

    The ends of glass braid may be bonded by use of adhesive, and then secured by spot tie or other means to prevent movement on the wire bundle.

    NASA-STD-8739.4 [9.3.3]

    group shield terminationdaisy chain ground termination

    ACCEPTABLE

    GROUP SHIELD TERMINATION

    Shield ground leads shall be terminated to a common ground point. No more than 4 conductors, plus a drain wire, shall be terminated in a single splice.

    NASA-STD-8739.4 [11.6]

    UNACCEPTABLE

    DAISY-CHAIN GROUND TERMINATION

    Shield ground leads terminated in a dasy-chain configuration are susceptible to a single-point failure, should one of the links break.

    NASA-STD-8739.4 [19.6.2.f.2]

    heat shrinkable sleevingheat shrink tube as stress relief

    ACCEPTABLE

    HEAT SHRINKABLE SLEEVING

    Sleeving shall be sized to provide a tight, smooth finish in the area of maximum diameter. Tubing shall be uniformly shrunk, without cracks, punctures, charred, burns or wrinkles.

    NASA-STD-8739.4 [9.8.1], [9.11], [19.6.1.e.13]

    ACCEPTABLE

    HEAT SHRINK TUBING AS STRESS RELIEF

    The sleeving covers the termination and extends a minimum of 5 mm (0.20 in.) over the wire insulation. Tubing is fully shrunk, tight and sufficiently rigid to provide stress relief and prevent flexure at the solder termination.

    NASA-STD-8739.4 [9.9], [Fig. A]

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    7





    电缆和线束通用规范 (cont.)
    cable with identificationin line splice

    ACCEPTABLE

    IDENTIFICATION

    Each cable/harness shall be identified by a permanent label/marking. Each connector shall be identified by a permanent label/marking affixed directly to the connector body, or to the cable adjacent to the connector.

    NASA-STD-8739.4 [14.2.1], [14.2.2]

    ACCEPTABLE

    IN-LINE SPLICE

    The splice exhibits a smooth profile, proper strain relief and is located in an area of the harness not subjected to flexure.

    Best Workmanship Practice

    insulation wrapmetal braid sleeving

    ACCEPTABLE

    INSULATION WRAP

    Non-conductive tape/insulation wrap may be used in applications in which the use of heat-shrinkable tubing is impractical. Tape and wrapping materials shall be installed per engineering documentation.

    Best Workmanship Practice

    ACCEPTABLE

    METAL BRAID SLEEVING

    Metal braid sleeving may be installed over harnesses by either direct weave or by use of prewoven tubing. An insulation/separation layer shall be installed between the harness and the metal braid.

    NASA-STD-8739.4 [9.7]

    overall harness shieldingpolymide and nylon braid sleeving with hot knife sealing

    ACCEPTABLE

    OVERALL HARNESS SHIELDING

    An overall braided metallic shield provides mechanical and electrical protection (EMI/RFI) to the harness. Metallic shielding shall exhibit a smooth and tight finish, with a uniform distribution of coverage and no projecting strands.

    NASA-STD-8739.4 [11.1.3]

    ACCEPTABLE

    POLYIMIDE/NYLON BRAID SLEEVING
    HOT KNIFE SEALING

    Polyimide or nylon braids (for use on ground support equipment) may have their ends sealed by use of a "hot knife" or similar instrument.

    NASA-STD-8739.4 [9.3.4]

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    8





    电缆和线束通用规范 (cont.)
    shield and drain wirespiral wrap sleeving

    ACCEPTABLE

    SHIELD/DRAIN WIRE

    The shield and drain wire have been properly terminated, per engineering documentation.

    NASA-STD-8739.4 [19.6.1.f.2]

    ACCEPTABLE

    SPIRAL WRAP SLEEVING

    Spiral wrap shall be tight, uniformly spaced and shall not overlap. Ends shall be trimmed to eliminate sharp edges.

    Note: Spiral wrap shall not be used on spacecraft or launch vehicles.

    NASA-STD-8739.4 [9.5]

    solder sleeve terminationsolder sleeve termination

    ACCEPTABLE

    SOLDER SLEEVE TERMINATION

    The solder sleeve has been properly installed and tightly shrunk. Strain relief is acceptable. Overlaps are of sufficient length to meet minimum electrical spacing. Solder fillet is visible, fully flowed and smooth.

    NASA-STD-8739.4 [11.4]

    UNACCEPTABLE

    SOLDER SLEEVE TERMINATION

    The solder sleeve has not been completely shrunk and is improperly positioned, resulting in a poor fit that does not provide a good mechanical grip or seal, and which does not meet minimum overlap requirements.

    NASA-STD-8739.4 [9.8.1], [9.11]

    splice assemblystrain relief

    ACCEPTABLE

    SPLICE ASSEMBLY PROFILE

    The location of splices shall be staggered to minimize the increase in profile to the harness. Final assembly profile shall not impact form, fit or function.

    Best Workmanship Practice

    ACCEPTABLE

    STRAIN RELIEF

    The cable (shield/unshielded) should be dressed to ensure that the strain relief mechanism transfers structural stresses from the connector to the cable sheath (or strength member) rather than to the individual conductors.

    Best Workmanship Practice

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    9





    电缆和线束通用规范 (cont.)
    splice and solder sleeve restraintsplice and solder sleeve restraint

    ACCEPTABLE

    SPLICE/SOLDER SLEEVE RESTRAINT

    Cable ties/lacing shall be installed at both ends of a splice or solder sleeve, but placement shall not violate stress relief requirements.

    Best Workmanship Practice

    UNACCEPTABLE

    SPLICE/SOLDER SLEEVE RESTRAINT

    Cable ties/lacing shall not be installed across the splice/solder sleeve body, unless sufficient protection is provided to prevent compression damage to the termination and/or to the insulation of adjacent conductors.

    Best Workmanship Practice

    stress reliefinsufficient stress relief

    ACCEPTABLE

    STRESS RELIEF

    Wires exiting from the connector shall be stress relieved.

    NASA-STD-8739.4 [7.3.22]

    UNACCEPTABLE

    INSUFFICIENT STRESS RELIEF

    The placement of cable ties/straps shall not negate strain relief in cables or harnesses.

    Best Workmanship Practice

    tie and wrap spacing on wiresincorrect tie spacing on wires

    ACCEPTABLE

    TIE/WRAP SPACING

    Ties are neat, tight and properly spaced (relative to harness diameter) to maintain the wiring in a tight, neat bundle.

    NASA-STD-8739.4 [9.2], [19.6.1.e.5]

    UNACCEPTABLE

    INCORRECT TIE SPACING

    Cable ties/wraps have not been properly spaced relative to bundle/harness diameter.

    NASA-STD-8739.4 [19.6.2.d.7]

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    10





    电缆和线束通用规范 (cont.)
    tie and wrap spacing at breakoutuniform conductor tension

    ACCEPTABLE

    TIE/WRAP SPACING AT BREAKOUT

    Lacing or tie wraps have been placed on both sides of the harness breakouts. Ties are neat and tight.

    NASA-STD-8739.4 [9.6]

    ACCEPTABLE

    UNIFORM CONDUCTOR TENSION

    The conductors exhibit uniform tension throughout the length of the harness. No bunching, bowing, looping, kinks, etc.

    NASA-STD-8739.4 [19.6.1.e.3]

    unused spare conductorsdamaged connector

    ACCEPTABLE

    UNUSED/SPARE CONDUCTORS

    Unused or spare conductors shall be terminated by folding the unstripped end back on itself and then sealed with insulation sleeving or wrap. Conductor ends shall be secured to prevent unwanted movement, protrusion or snagging.

    NASA-STD-8739.4 [19.6.1.e.19]

    UNACCEPTABLE

    DAMAGE
    CONNECTOR

    Damage to the connector (i.e.: cuts, gouges, cracks, deformed features, bent pins, exposed base metal, etc.).

    NASA-STD-8739.4 [19.6.1.e.1]

    damaged insulationexposed power contacts

    UNACCEPTABLE

    DAMAGE
    INSULATION

    Damage to the cable jacket, ribbon or conductor insulation (i.e.: cuts, pinching, nicks, scrapes, crazing, crushing, cold flow, exposed conductors, punctures, thinning or burns).

    NASA-STD-8739.4 [19.6.2.e.9]

    UNACCEPTABLE

    EXPOSED POWER CONTACTS

    Active signal/live voltages shall be confined to connectors with sockets to preclude the exposure of voltage points when the connector is disconnected.

    NASA-STD-8739.4 [7.3.18]

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    11





    电缆和线束通用规范 (cont.)
    improper bend radiusimproper cable tie wrap tension

    UNACCEPTABLE

    IMPROPER BEND RADIUS

    The harness exhibits a bend radius that is less than the minimum recommended for the conductor type(s) used and overall harness diameter.

    NASA-STD-8739.4 [7.3.21]

    UNACCEPTABLE

    IMPROPER CABLE TIE/WRAP TENSION

    Cable tie/wrap tension is too loose, allowing lateral movement along the cable bundle under normal handling.

    NASA-STD-8739.4 [19.6.2.d.4]

    improper cable tie wrap tensionimproper lacing knot

    UNACCEPTABLE

    IMPROPER CABLE TIE/WRAP TENSION

    Cable tie/wrap tension is too high, resulting in deformation and pinching of the wire insulation.

    NASA-STD-8739.4 [19.6.2.d.3]

    UNACCEPTABLE

    IMPROPER LACING KNOT

    The cable lacing has been secured with a bow-knot, rather than a square/non-slip knot. This tie may eventually loosen.

    NASA-STD-8739.4 [19.6.2.d.4]

    improper routingimproper slice gauge size

    UNACCEPTABLE

    IMPROPER ROUTING

    Cables and harnesses shall be routed so that they are protected from abrasion, cold flow, cut through, vibration, chafing, flexing and sharp edges.

    NASA-STD-8739.4 [7.3.14]

    UNACCEPTABLE

    IMPROPER SPLICE GAUGE/SIZE

    Replacement conductors shall be of the same voltage and current rating as the original conductor.

    Best Workmanship Practice

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    12







    电缆和线束通用规范 (cont.)
    improper terminationincomplete coverage of metal braid

    UNACCEPTABLE

    IMPROPER TERMINATION

    Solder and/or crimped terminations that do not meet the requirements of NASA-STD-8739.3 and/or NASA-STD-8739.4 shall be cause for rejection.

    NASA-STD-8739.4 [13.1]

    UNACCEPTABLE

    INCOMPLETE COVERAGE OF METAL BRAID

    Metal braid sleeving shall exhit uniform coverage, to provide electrical and mechanical protection to the underlying harness.

    NASA-STD-8739.4 [19.6.2.b.8], [19.6.2.e.5]

    incorrect lacing materialprojecting shield strands

    UNACCEPTABLE

    INCORRECT LACING MATERIAL

    Waxed lacing shall not be used for spaceflight applications.

    NASA-STD-8739.4 [19.6.2.d.2]

    UNACCEPTABLE

    PROJECTING SHIELD STRANDS

    The shield strands have been improperly dressed, resulting in projecting strands that may result in an electrical short or sharp object (punture/snag) concern.

    Best Workmanship Practice

    splices in flexure zoneunsealed environmental connector

    UNACCEPTABLE

    SPLICES IN FLEXURE ZONE

    Splices shall not be installed in areas where the harness is designed to flex.

    Best Workmanship Practice

    UNACCEPTABLE

    UNSEALED ENVIRONMENTAL CONNECTOR

    Sealing plugs or unused pins shall be installed in all unwired/unused holes to retain the environmental rating of the connector.

    NASA-STD-8739.4 [7.3.19]

    美国宇航局工艺标准
    NASA logoReleased:
    04.05.2002
    Revision:
    Revision Date:
    Book:
    4
    Section:
    4.01
    Page:
    13



上海富熬电子科技有限公司   

分销航空、航天相关特种产品品牌如下:

1、 特殊超细金属丝及超薄带:LFA、CFW、AMETEK、ARNOLD、PCC Rollmet等

2、连接器合作品牌:SOURIAUAERO- ELECTRIC AirBorn、 AMP、 Amphenol、 Cinch、 TE、 ITT、 Radiall、 Rockwell、 Tri-Star、Positronic、Glenair、 Deutsch等;

3、线缆合作品牌:Nexans、 Carlisle、Harbour、 Nexans、 Micro-Coax、  Draka、  Gore、 Raychem、Thermax;

4、集成电路合作品牌:AD、IDT、NS、SATCON、TI、VICOR、INTERSIL、MICROSEMI、LATTICE;

5、开关/继电器/传感器合作品牌: EATON、HONEYWELL、LEACH、ENDEVCO、DEUTSH、ECE、GRAYHILL、EMRISE;

上海富熬电子科技有限公司

电话:86-21-5718-0233

传真:86-21-5718-0235

邮箱:sales@sh-fuao.com

网址:www.--sh-fuao.com

地址: 上海市奉贤区南桥镇解放东路1018号


游客 --- 2022-01-18 09:00:39

2

翻譯得有點糟糕  如果中文翻不好 應該直接上原文名詞

Tinselwire --- 2022-01-18 22:37:19

3

收到,下次这类会注意,谢谢!
-- 结束 --