“poppet valve”的概念、定义、翻译、参考文献-科学参考

单词	poppet valve
释义	poppet valve [`päp·ǝt ´valv] ^{MECHANICAL ENGINEERING} A cam-operated or spring-loaded reciprocating- engine mushroom-type valve used for control of admission and exhaust of working fluid; the direction of movement is at right angles to the plane of its seat.
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