Mechanical processes, including solids transportation, crushing and pulverization, screening and sieving.

机械过程，包括固体运输，粉碎，粉碎，筛选，筛分。

youdao

Mechanical processes, including solids transportation, crushing and pulverization, screening and sieving.

机械过程，包括固体运输，粉碎，粉碎，筛选，筛分。

youdao