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单词 depthing
释义 ˈdepthing, vbl. n.
[f. assumed vb. depth = depthen + -ing1.]
In depthing or depthening-tool: a. a countersink for deepening a hole; b. a watchmaker's tool for gauging the distances of pivot-holes in movement plates.
1788Trans. Soc. Arts VI. 188 Description of the sector depthing tool [in Horology].1879Cassell's Techn. Educ. IV. 325/2 Supposing we place a wheel and pinion into the depthing tool, with sixty-four teeth and eight leaves respectively.1884F. J. Britten Watch & Clockm. 81 Accuracy of construction is absolutely essential in the depthing tool.
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更新时间:2024/12/22 13:25:10