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
随便看	primary alcohol primary alphabet primary amine primary atypical pneumonia primary battery primary benefit primary body primary body cavity primary burial primary care primary cause primary cell primary circle primary coil primary color primary commercial blanket bond primary constriction primary consumer primary covert primary deposit primary derivative primary election primary endosperm nucleus primary evidence primary explosive

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