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单词 swing-tool
释义

> as lemmas

swing-tool
swing-tool n.
Brit. /ˈswɪŋtuːl/
,
U.S. /ˈswɪŋˌtul/
(see quot. 1875).
ΘΠ
society > occupation and work > equipment > machine tool > [noun] > tool-holder
swing-tool1846
tool-holder1877
tool head1950
1846 C. Holtzapffel Turning & Mech. Manip. II. 849 Various kinds of swing tools, used by watchmakers in filing and polishing small flat works.
1875 E. H. Knight Pract. Dict. Mech. Swing-tool, a holder which swings on horizontal centers, so as to yield to unequal pressure and keep the plate flat against the face of the file.
extracted from swing-comb. form
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as lemmas
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