就是敢对你唯所欲为 » Is your CD is seeking to dare 工业废料 » Industry waste material 有时候，沉默，是最好的诉说 » Sometimes, Silence is the best way of telling. .
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An easy method for recovering silver from waste ceramic flaky capacitors, a kind of waste material from electronic industry, has been presented in the article.
介绍了从电子元件行业的废料——废瓷片电容中回收贵金属银的简易方法。
The industry waste slag fly ash or the river sand is used as the siliceous material.
工业废渣粉煤灰或河砂一般被用来作为硅质材料。
Ferrous sulphate is a wide used product of chemical industry, which was produced with waste iron as raw material in the past so that its cost was higher.
硫酸亚铁是一种用途广泛的化工产品，过去系采用废铁作原料进行生产，但成本较高。
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