英语词汇“welch plug”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	welch plug
释义	welch plug noun Etymology: probably from the name Welch : a plug for sealing an unused end of an oil passage drilled through a hollow crankshaft, crank arm, or crankpin
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