英语词汇“valve helmet mask”的读音、翻译、释义、用法及例句-开邑网

词汇	valve helmet mask
释义	valve helmet maskvalve helmet mask1.■活门头兜面具
随便看	freight dispatching telephone freight earnings freight elevator freight equalization freighter freight flow freight flow diagram freight flow volume freight forward freight forwarder freight forwarder agency charge freight free freight handling freight handling facility freight house freight house canopy freight hub terminal freight indemnity freight index freight information center freight in full freighting freight insurance freight invoice freight inwards

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