“piston valve”的概念、定义、翻译、参考文献-科学参考

单词	piston valve
释义	piston valve [`pis·tǝn ¦valv] ^{MECHANICAL ENGINEERING} A cylindrical type of steam engine slide valve for admission and exhaust of steam.
随便看	opisthognathous opisthonephros Opisthopora opisthotic opisthotonus opium opoka Opomyzidae opossum Oppenauer oxidation Oppenheimer-Phillips reaction Oppenheimer-Volkoff limit Oppenheim's disease opponent-colors theory opportunistic microorganism opportunistic species opposed engine opposing wind opposite opposite side opposite tide opposite vertices opposition opsonic action opsonic index

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