Technological process suitable for coal based city gas should be chosen accord ing to the quality of coal and the scale of the factory and the coproduction of chemical products.是什么意思_Technological process suitable for coal based city gas should be chosen accord ing to the quality of coal and the scale of the factory and the coproduction of chemical products.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句