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

单词	valve spring
释义	valve spring noun 1. a helical spring used to hold closed a valve in the cylinder head of an internal-combustion engine 2. any spring that closes a valve after it has been opened mechanically or by flow pressure
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