| 单词 | square thread |
| 释义 | > as lemmassquare thread square thread n. Mechanics a screw thread which in cross-section is castellated in form, with the width and height of the thread equal to the width of the valley between threads. ΘΚΠ society > occupation and work > equipment > building and constructing equipment > fastenings > [noun] > screw > thread > types of thread worm1725 drunkenness1786 square thread1838 V-threada1877 buttress thread1882 knuckle-thread1887 1838 Civil Engineer & Architect's Jrnl. 1 279/2 The thread of a square threaded screw. 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. 1939 S. E. Winston Machine Design iii. 72 The Square Thread..is probably the most typical transmission screw thread, as its mechanical efficiency is considerably higher than that of such threads as the V thread. 1975 G. Bram & C. Downs Manuf. Technol. iv. 120 In the square thread the sides are parallel and normal to the axis of the screw. < as lemmas |
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