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单词 ratchet drill
释义

Ratchet drill


a portable machine for working a drill by hand, consisting of a hand lever carrying at one end a drill holder which is revolved by means of a ratchet wheel and pawl, by swinging the lever back and forth.

See also: Ratchet


ratchet drill


ratchet drill

ratchet drill A hand-driven drill, 1 which has a ratchet-driven chuck; used in confined spaces.
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更新时间:2024/12/24 2:36:21