In research and developing, we developed compound cement, low alkali cement, middle thermal cement, new dust collection etc, and study burner, clinker quality and cement grinding technology etc.是什么意思_In research and developing, we developed compound cement, low alkali cement, middle thermal cement, new dust collection etc, and study burner, clinker quality and cement grinding technology etc.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句