“ball check valve”的概念、定义、翻译、参考文献-科学参考

单词	ball check valve
释义	ball check valve [`bȯl `chek ´valv] ^ENGINEERING A valve having a ball held by a spring against a seat; used to permit flow in one direction only.
随便看	address part address register address sort routine address space address track address translation add-subtract time add time add-to-memory technique adduct adduction adductor Adeleina adelite adelphous adenase adenine adenitis adenoacanthoma adeno-associated satellite virus adenocarcinoma adenohypophysis adenoid adenoma adenomatoid tumor

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