Now there are some problems such as unsuitable recovering location, insufficient recovering quantity, imperfect ore-coke nut mixing method and so on.

我国目前存在着焦丁回收地点不当、回收量不足及焦丁与矿石混匀方法不完善等方面的问题。

youdao

Now there are some problems such as unsuitable recovering location, insufficient recovering quantity, imperfect ore-coke nut mixing method and so on.

我国目前存在着焦丁回收地点不当、回收量不足及焦丁与矿石混匀方法不完善等方面的问题。

youdao