Engineering. An aperture or passage through which water may pass in a valve or other mechanism, esp. considered in respect of its cross-sectional…
| 单词 | θ213819 | 
| 释义 | society > occupation and work > equipment > other specific types of equipment > 			[noun]		 > tap > full-open passage area in (1)		 waterway1729 Engineering. An aperture or passage through which water may pass in a valve or other mechanism, esp. considered in respect of its cross-sectional… | 
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