slotted shoulder screws 中文意思是什麼
slotted shoulder screws
解釋
開槽無頭軸肩螺釘-
Slotted pan head screws with shoulder
帶肩的平頭槽頭螺釘 -
Slotted cheese head screws with shoulder
開槽圓柱頭軸位螺釘
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