英语词汇expansion bolt怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	expansion bolt
释义	expansion bolt noun a bolt that expands when inserted, no thread being required in the surrounding material 伸缩栓, 膨胀螺栓。
随便看	pop the question pop-top populace popular popular etymology popular front popularism popularity popularization popularize popularizer popularly popular music populate populated population population group population inversion populism populist populistic populous populously populousness pop up

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