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

将硝酸倒在铜上, 会散发出一种棕色蒸气。

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

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

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

化工生产品腐蚀性物料,如:烧碱、纯碱、浓稀硫酸、碳酸、醋酸

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

该方法采用硝酸溶解样品,黄原酯棉富集分离,以硫氰酸盐滴行测

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

主要介绍了铬(Ⅵ)类试剂,过氧化物、硝酸、氧和臭氧各类氧化剂对醚选择性氧化以及醚阳极电氧化研究状况。

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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.

本文介绍利用硝硫混酸常压氧化法,把甜菜废渣制成工业品草酸。

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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.

采用硝酸分解法可制取纯度高于99%三氧化二铟.本法具有设备少、操作简单、成本低、见效快优点.

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chid, chidden, chide, Chideruan, chief, Chief Executive, chief executive officer, chief financial officer, chief justice, chief of staff,

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3G, 401(K), a,

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ETS官方托福教程

For choice D, we found that information here, where it talks about nitric acid.

至于D选项,我们在里发现了该信息,它谈论的是硝

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PBS英语讯息

The ship had 25 tons of nitric acid and other chemicals on board, including tons of plastic pellets.

艘船上有25吨的硝其他化学物质,其中包括数吨的塑料颗粒。

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VOA慢速英语_单词故事

Some people say it dates back to the use of nitric acid to determine the gold content of jewelry.

有些人以追溯到使用硝来测定珠宝的黄金含量。

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化学 Crash Course

So do strong acids like hydrochloric, and sulfuric, and nitric acid.

等强也是如此。

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The Problems of Cell 13 十三号死刑牢房(Black Cat)

I wanted some nitric acid and I had to repeat the word 'acid'several times.

我想要一些硝, 我不得不重复几次“个词。

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Crash Course 综合篇

Salts do this. So do strong acids like hydrochloric, and sulfuric, and nitric acid.

以做到一点。 盐等强也是如此。

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世界奇趣图谱

They did this by submerging teeth into various types of acid, including hydrochloric acid, nitric acid, and sulphuric acid.

他们通过将牙齿浸入各种类型的中来做到一点, 包括盐、硝

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Crash Course 综合篇

He used nitrocellulose, a flammable solid, created by mixing cotton with nitric acid to create a hard, shiny, white sphere.

他使用了硝化纤维素, 一种易燃固体,通过将棉花与硝混合制成坚硬、闪亮的白色球体。

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TED-Ed(视频版)

An arrow from " add nitric acid" to " shake vigorously" means that the acid addition has to happen before shaking.

从“添加硝”到“剧烈摇晃”的箭头表示必须在摇晃之前添加

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世界奇趣图谱

Sulfuric and nitric acids are strong, but there are far stronger acids that can dissolve skin and cause horrific irreversible damage.

是强,但还有更强的以溶解皮肤并造成怕的不逆转的伤害。

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SciShow - Chemistry

And when you expose cellulose, like in wood pulp or cotton, to nitric acid, it forms cellulose nitrate -- which is highly flammable.

当你将纤维素( 如木浆或棉花)暴露在硝中时, 它会形成高度易燃的硝纤维素。

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ETS官方托福教程

Let's see how many correct choices we can find by scanning for key words that appear in the answers, like dust, sunlight, cold, dark, elements, crust, and nitric acid.

让我们看看我们以通过浏览找寻选项中出现的关键词,例如灰尘、阳光、寒冷、黑暗、元素、地壳,找到多少正确选项。

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1984 George Owell

The stuff was like nitric acid, and moreover, in swallowing it one had the sensation of being hit on the back of the head with a rubber club.

他的脸马上绯红起来,眼角里流出了泪水。

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ETS官方托福教程

Both the given sentence and choice A talk about the large amounts of nitric acid and melted rock that were the result of the explosion and that started fires that destroyed plant life.

原句选项A讲的都是爆炸产生的大量硝熔岩,及其导致的毁灭植物的火灾。

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经济学人-科技

To check that, Dr Andres and her team ground their bricks into powder and soaked them in water, shook them in special machines for days at a time, and even tried to dissolve them in nitric acid.

为了验证一点,博士她的科研小组将砖头打成粉末,浸泡在水里,在特殊装置里几天不停地摇晃,甚至在硝中溶解粉末。

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3G, 401(K), a,
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