脱硫石膏作水泥缓凝剂必须低温烘干。

The FGD gypsum should be dried at low temperature for the use of cement retarder.

youdao

脱硫石膏作水泥缓凝剂必须低温烘干。

The FGD gypsum should be dried at low temperature for the use of cement retarder.

youdao