... 非均等节距螺桨 non-uniform pitch propeller 非气遮蔽电弧焊 non-gas shielded arc welding 无延性转变温度 nil-ductility transition temperature (NDT) ...
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... non-flared fitting 非扩口式（管）接头 non-gas shielded arc welding 无气体保护电弧焊 non-gas shielded welding 无气体保护焊 ...
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non gas shielded arc welding 无气体保护电弧焊
non gas-shielded arc welding 无气体保护焊
non-consumable gas shielded arc welding 非熔化极气体保护焊
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