...烯瓶盖 金属瓶盖 服装 主要进口商品英文 METAL CAN,P.P.CAP,CROWN CAP,GARMENTS 金属紧固件 主要进口商品英文 METAL FASTENERS 金属紧固件 主要进口商品英文 METAL FASTENERS ..
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组装需要使用细木工制作，避免使用金属紧固件。
Wood joinery is used to assemble the piece - metal fasteners are avoided.
表面硬化：表面硬化的紧固件是黑色金属，其表面经过处理后比内心硬度要高。
Case hardened: a case hardened fastener is a fastener of ferrous material having a surface which has been made harder than the core.
镀层：是在紧固件表面上用电解作用、电解作用，脉冲或可靠方法粘附金属。
Plating: plating is the application of a metallic deposit on the surface of the fastener by electrolysis, impact, or other suitable means.
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