求翻译：第二十一条 对于清查盘盈、盘亏、毁损、报废的材料，应及时查明原因，同时做好废旧物资的回收清理工作，对其中尚能利用的部分材料应及时回收，入库保管。是什么意思？

Article 21 For the inventory overage, shortage, damage, scrap materials, should be promptly identify the cause, while doing recovery and clean-up of waste materials which can still use part of the material should be recycling, warehousing custody .

Article 21 * for inventory stock gain, loss, damage, scrap materials, should be promptly identified and at the same time to do a good job of recycling waste materials to clean-up efforts, which have yet to be able to take advantage of some of the materials should be kept timely recovery, and storage

21th article Regarding the check transfer surplus of, the loss, damage, the abandonment material, should verify the reason promptly, simultaneously completes the worn out commodity the recycling clean-up, be supposed to recycle promptly to still could the use partial materials, warehousing storage.

Article 21st inventory excess, loss, damage, scrap materials, should be investigated in a timely manner, at the same time improve the work of recovery and cleaning of waste material, which is able to use some of the material should be recycled in time, into custody.

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