英语词汇“trolley beam”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	trolley beam
释义	trolley beam trolley beam An exposed steel beam, attached to the underside of the structure above; provides support for and acts as a track for a trolley crane.
随便看	sri aurobindo gosh sri aurobindo institute for applied scientific research srib sribs sric srica sricc sricf sri chinmoy srici sricl sricp srid sridhar sri (disambiguation) sridp srie srieg srif srif-1 srif-2 srifs srig sri ganganagar sriganganagar

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