A heavy media system or a sand float process can be used either alternatively or additionally.

可以有选择地或者附加地使用重介质系统或者砂石漂浮过程。

youdao

A heavy media system or a sand float process can be used either alternatively or additionally.

可以有选择地或者附加地使用重介质系统或者砂石漂浮过程。

youdao