| 单词 | top-tool |
| 释义 | > as lemmastop-tool top-tool n. any of various tools used from above or forming the lower part of a device; cf. bottom tool n. ΘΚΠ society > occupation and work > equipment > metalworking equipment > [noun] > forging equipment > other forging equipment fuller1587 burras-pipe1676 anvil1678 washer1678 porter1794 porter rod1839 top-tool1877 turn-bat1881 porter bar1887 1839 J. Millington Elem. Civil Engin. 329 The bottom tool is inserted in the hole in the anvil, the heated iron laid upon it, and the top tool held by a long handle, is placed over it. 1857 Newton's London Jrnl. Arts & Sci. 6 218 The top tool g, may be made to descend, and in its descent the tag-blanks would take the circular form of the groove i, in the bed tool. 1875 E. H. Knight Amer. Mech. Dict. III. 2597/2 Top-tool, a blacksmith's tool..used above the work, being struck by a hammer. 1964 French Techn. Bull. (Econ. Section French Embassy U.S.A.) 3 Drawback cylinders are also provided in the top tool for releasing the top halves of the dies. < as lemmas |
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