| 单词 | pressure-retaining | 
| 释义 | > as lemmaspressure-retaining   pressure-retaining adj. ΚΠ 1884    M. N. Forney Car-builder's Dict. 		(ed. 2)	 133/1  				Pressure-retaining valve... A valve for use on long and steep gradients,..which keeps the train under control. 1971    B. Scharf Engin. & its Lang. xii. 177  				Pressure-retaining valves which maintain the pressure on the upstream side. 2003    World Oil 		(Nexis)	 1 June 75  				All pressure-retaining components of the system are manufactured from ASME SA-designated materials. < as lemmas  | 
	
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