| 单词 | buttress thread | 
| 释义 | > as lemmasbuttress thread   buttress thread  n. a screw thread in which one face of the thread is set (approximately) at right angles to the bolt or shaft. 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 1882    W. C. Unwin Elem. Machine Design 		(ed. 4)	 v. 117  				The modified triangular screw thread..may be used. This is termed the buttress thread. 1930    Engineering 6 June 721/2  				In asymmetrical threads, such as..certain buttress threads. 2010    J. A. Collins et al.  Mech. Design Machine Elements & Machines 		(ed. 2)	 xii. 463  				The buttress thread provides greater strength for unidirectional loads. < as lemmas | 
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