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1.When nitric acid is poured on copper, a brown vapor gives off.

1.将硝酸倒在铜上, 会散发出一种棕色蒸气。

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2.Technology of nuclear fuel cycle.Determination of neptunium in nitric acid solutions by molecular absorption spectrophotometry.

2.核能.核燃料循环技术.分子吸收分光光度法测硝酸溶液中Nuclear energy.

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3.Corrosively medium for chemical production such as sodium hydrate,caustic soda,sulfuric acid,nitric acid,acetic acid,fatty acid.

3.工生产品中腐蚀性物料,如:烧碱、纯碱、浓稀硫酸、碳酸、醋酸

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4.The ore sample was dissolved in nitric acid.After enrichment and separation with Xanthic ester cotton,the silver was determined by thiocyanometry.

4.该方法采用硝酸溶解样品,黄原酯棉富集分离,以硫氰酸盐法进行测

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5.The selective oxidation of ethers by chromic reagent, peroxide, nitric acid, oxygen and ozonide, as well as the ethers anodic oxidation are particularly introduced.

5.主要介绍了铬(Ⅵ)类试剂,过氧物、硝酸、氧和臭氧各类氧剂对醚选择性氧以及醚阳极电氧研究状况。

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6.This article introduces that using mixed acid of nitric acid and sulfuric acid, beet waste-slag produces industrial product oxalic acid by ordinary pressure hydrocarbonylation.

6.本文介绍利用硝硫混酸常压氧法,把甜菜废渣制成工业品草酸。

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7.The indium sesquioxide with over 99% purity can be prepared by a decomposition of nitric acid. The method was characterized by fewer equipments, simple operation, low cost and quick yield.

7.采用硝酸分解法可制取纯度高于99%三氧二铟.本法具有设备少、操作简单、成本低、见效快优点.

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