The exhaust gas in the EPC casting workshop was collected by a gas sampler, and the composition of the exhaust gas was analyzed by a gas chromatograph.是什么意思_The exhaust gas in the EPC casting workshop was collected by a gas sampler, and the composition of the exhaust gas was analyzed by a gas chromatograph.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句