| 单词 | pop valve | 
| 释义 | Definition of pop valve in English:pop valvenoun 
 OriginLate 19th century; earliest use found in Buyers' Guide & Mechanics' Manual. Definition of pop valve in US English:pop valvenoun 
 OriginLate 19th century; earliest use found in Buyers' Guide & Mechanics' Manual.  | 
	
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