“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	ampangabeite Ampeliscidae ampelite amperage ampere ampere-hour ampere-hour capacity ampere-hour meter ampere meter squared ampere-minute ampere per meter ampere per square inch ampere per square meter ampere square meter per joule second ampere-turn amperometric titration amperometric transducer amperometry Ampharetidae Ampharetinae amphetamine amphiarthrosis amphiaster Amphibia Amphibicorisae

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