fine thread screw 中文意思是什麼
fine thread screw
解釋
細紋螺釘-
Stud ends, ports, for fittings, valves - part 1 : plug screw with metric fine pitch thread ; general outlay of types
配件和閥門用螺柱端和孔.第1部分:帶公制小螺距螺紋螺
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