目前主要用联合制碱法生产碳酸钙纯碱.At present mainly uses the union system alkaline process production calcium carbonate soda ash.它的工业制法主要有氨碱法和联合制碱法两种.Its industry facture mainly has the ammonia soda law and the system alkaline process t...

“联合制”的英语可以翻译为：[法] combinatus ...