单词 | brace-head |
释义 | > as lemmasbrace-head brace-head n. ΘΚΠ society > occupation and work > equipment > piercing or boring tools > [noun] > boring tool > for boring in the ground > parts or attachments topit1839 brake1849 tiger1864 bore-log1870 brace-head1875 stretcher-bar1883 sabot1884 1875 R. Hunt & F. W. Rudler Ure's Dict. Arts (ed. 7) I. 439 The brace-head, or cross-head, with the four handles held by the borers. < as lemmas |
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