| 单词 | friction head | 
| 释义 | > as lemmasfriction head   friction head  n.				 [head n.1 Phrases 3q(a)]			 the head that goes to overcome the frictional resistance of a liquid flowing in a pipe. ΘΚΠ the world > matter > liquid > liquid flow > action or process of flowing > 			[noun]		 > rate of flow > instrument to regulate or measure rate > specifically friction resistance friction head1889 1889    M. Merriman Treat. Hydraulics vii. 201  				Y is the friction-head consumed in the large main. 1963    A. C. Twort Textbk. Water Supply x. 274 		(caption)	  				Friction head loss through various fittings, etc. < as lemmas  | 
	
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