| 单词 | master-screw |
| 释义 | > as lemmasmaster-screw master-screw n. ΚΠ 1902 Encycl. Brit. XXXIII. 809/2 The screw is an important productive measuring instrument, whether used as a micrometer-screw of less than an inch in length, or as a master-screw of 20 feet in length. 1966 E. A. Battison in Contrib. from Museum Hist. & Technol. (Smithsonian Instit., Bull. 240) xxxvii. 117/1 We are not told, however, how he originated this master screw which is used to produce the accurately threaded work pieces. 2004 B. Lawton Early Hist. Mech. Engin. II. xix. 970 The work to be screwed protruded from the master screw, to which it was fastened, and was supported in a tailstock. < as lemmas |
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