英语词汇“ball check valve”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ball check valve
释义	ball check valve 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.
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