Based on raw material analysis, compound coal powder is developed through the method of cement rate quantity.

在原材料分析的基础上，以水泥率值公式法研制了配方煤粉。

youdao

Based on raw material analysis, compound coal powder is developed through the method of cement rate quantity.

在原材料分析的基础上，以水泥率值公式法研制了配方煤粉。

youdao