a tool that is fitted into a diestock and used for cutting male (external) screw threads on screws or bolts or pipes or rods.
装在
丝攻里用来切割丝钉、栓、管
或棒类的多余的旋的工。
丝攻a tool that is fitted into a diestock and used for cutting male (external) screw threads on screws or bolts or pipes or rods.
装在丝攻里用来切割丝钉、栓、管或棒类的多余的旋的工。
One of several component pieces that are fitted into a diestock to cut threads on screws or bolts.
拔出一颗坏牙；拔出一个尖片；也在抽象意义上使用；从。
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