It is an exigent problem to solve the dry deep screening of moist fine coal.

潮湿细粒煤炭干法深度筛分是筛分技术急需解决的问题。

youdao

It is an exigent problem to solve the dry deep screening of moist fine coal.

潮湿细粒煤炭干法深度筛分是筛分技术急需解决的问题。

youdao