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单词 right-hand screw
释义

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right-hand screw
right-hand screw n. a screw threaded so that it advances when turned clockwise.
ΚΠ
1795 Repertory of Arts 2 93 The screw E..has one end cut with a right hand, and the other with a left hand, screw.
1810 Belfast Monthly Mag. May 378/2 The two elevating screws at one side of the endless screw, are right hand screws, and those at the other side, are left hand screws.
1917 L. Frank Essent. Mech. Drafting xi. 123 A right-hand screw would turn around to the right (clockwise) in advancing.
2001 S. Vogel Prime Mover (2003) vii. 136 All hand-operated meat grinders..have clockwise-advancing right-hand screws.
extracted from right handn.adj.
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