分选精不仅与原煤能否顺利地按比重分层，而且还与最终产品的排卸方式有关。

The precision of grading is relation of grade specific gravity and measure of ultimately discharge of products.

youdao

要进行有效的分选，分选材料之间的比重差别必须足够大。

For effective separation, it is essential that the density difference between the materials to be separated must be big enough.

youdao

要进行有效的分选，分选材料之间的比重差别必须足够大。

For effective separation, it is essential that the density difference between the materials to be separated must be big enough.

youdao