了解月结款的回收情况。

Understanding monthly statements of the recovery situation.

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介绍了锦化化工（集团）有限责任公司PVC生产装置中循环冷却系统浓缩排放污水的回收情况。

The effects of recycling concentrated waste water from the circulating cooling system in the production of PVC in Jinhua Chemical Industry(Group) Co. , Ltd. were introduced.

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为了控制尾矿流失，提高银的选矿回收率，结合生产实际，重点研究了选矿产品各粒级的回收情况。

To control tailings to run off, raise the recovery of silver, We emphatic research the recovery of ore dressing product of all grain level.

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