单词 | piercing-file |
释义 | > as lemmaspiercing-file ΚΠ 1846 C. Holtzapffel Turning & Mech. Manip. II. 826 Nicking and piercing files..are called round-off files, and are used for rounding or pointing the teeth of wheels. 1875 E. H. Knight Amer. Mech. Dict. III. 1699/2 Piercing-file, a sharp and narrow file to enlarge a narrow drilled hole. < as lemmas |
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