The theoretical analysis and the studies on the feasibility on the basis of a series of experiments utilizing manganese slag as retarder in stead of gypsum in cement manufacture were carried out.是什么意思_The theoretical analysis and the studies on the feasibility on the basis of a series of experiments utilizing manganese slag as retarder in stead of gypsum in cement manufacture were carried out.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句