单词 | swing-tool |
释义 | > as lemmasswing-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. < as lemmas |
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