| 单词 | sub-piston | 
| 释义 | > as lemmassub-piston   sub-piston  n.  Brit.  , U.S.  ΚΠ 1880    Appletons' Cycl. Appl. Mech. II. 616  				The same plan of cushioning is also applied to the sub-pistons which operate the valve. 1900    G. D. Hiscox Horseless Vehicles 66  				When the ports in the sub-piston close. 2001    Cryogenics 41 422/1 		(caption)	  				Superfluid shock test tube facility: (1) MO-main valve; (2) high-pressure chamber; (3) sub-piston; (4) main-piston. < as lemmas  | 
	
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