| 单词 | acme thread |
| 释义 | > as lemmasacme thread acme thread n. (also with capital initial) Mechanics a type of screw thread having flat apexes and valleys (as in a square thread), but with the sides of the threads inclined at an angle of 29 degrees. ΘΚΠ society > occupation and work > equipment > building and constructing equipment > fastenings > [adjective] > screw > types of screw or thread Whitworth1877 acme thread1908 self-tapping1912 Phillips1935 1895 Amer. Machinist 18 2 Mr. Handy has named the new thread the ‘Acme Standard’.] 1908 E. Oberg Handbk. Small Tools i. 29 The Acme thread..has of late become widely used, having in most instances taken the place of the square thread on account of its better wearing qualities. 1964 S. Crawford Basic Engin. Processes (1969) v. 116 Travel of the cross-slide is controlled by a screw, usually of square or acme thread form. 2004 Tool & Machinery Catal. 2005 (Axminster Power Tool Centre Ltd.) xii. 13/3 The body is cast iron, the screw has a deep cut Acme thread both for the strength and smoothness of operation. < as lemmas |
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