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Fluoroaniline is synthesized in two steps from p-nitrochlorobenzene and active potassium fluoride.

以对氯硝基苯和化钾等为原料,经二步法合成了对苯胺。

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Quartz sand, activated carbon, removing iron and manganese filtration, deoxygenation, fluoride removal equipment.

石英砂、碳、过滤除铁除锰、除氧、除设备。

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Objective To investigate clinical apearances, mechanism and prognosis of the cerebropathy of acute organic fluoride poisoning.

目的探讨急有机脑病的临床表现、机理及其治疗效果。

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TheyThe use a fluorid of fluoride to protect teeth is common in many parts of the world.

化物保护牙齿被世界上很多国家所使用。

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Aim To validate spectrum analysis of oxalyl fluoride neutral molecule(FCO)2 and study vibrational mode of the two configuration.

结果得到了与光谱析一致的结果,草有平面反式和顺式2种构像。

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Ammonium bifluoride is an inorganic fluoride salt, whose consumption and output exceed tmi thousand of tons in China.

化氢铵是一种产量和用量都较大的无机盐,国内年产量在数万吨以上。

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Benzaldehyde and acetone used as materials,the benzylidene acetone is synthesized in the presence of potassium fluoride on alumina.

以苯甲醛和丙酮为原料,化钾氧化铝作催化剂合成了苄叉丙酮。

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It was studied that the process conditions of treating fluobenzene wastewater with acidification, extraction, inorganic fluoride removal and electrocatalysis.

研究酸化+萃取+无机除+群电催化氧化等物化技术处理苯生产废水的工艺条件。

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T calculated from the characteristic temperatures shows that the thermal stability of fluorophosphate glass is better than fluoride glass.

数据显示磷酸盐玻璃的热稳定化物好。

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In the atomic energy field and nuclear weapons production,it act as the raw material of uranic fluoride ,fuels and additives of rockets.

在原能工业和核武器生产中,化氢是制造六的原料,也是生产火箭燃料和添加剂的原料。

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The experiments suggest that the superfluorescence of fluoride glass fibr is a kind of low coherence and high performances light source with bright application prospect.

实验表明利用化物玻璃光纤有望获得能优异的有应用前景的低相干度集成化光源。

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Fluorine, one of the necessary trace elements of human beings is presented in the forms of inorganic and organic compounds in foods, such as sodium fluoride, silicon fluoride, and fluoroacetate etc.

是人体必需的微量元素之一,通常以各种多元无机态或有机态形式存在。

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Ariannita学美式英语(双语精选)

So there are some restrictions for fluoride.

处理有一些限制

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Crash Course 世界神话学篇

A reservoir with more dreams...and less fluoride.

一个拥有更梦想......更少的水库

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VOA Special 2024年4月合集

The water contains chemicals from the ground – including fluoride.

水中含有来自地下的质,包括

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Vox 观点

Putting fluoride in the water has long fueled conspiracy theories.

在水中添加长期以来引发了谋论。

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CNN 听力 2019年5月合集

The new standard would limit that to 0.7 milligrams of fluoride per liter.

新规定则将含量限值降低为每公升0.7毫克。

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TED-Ed(视频版)

In most toothpastes and many water supplies, we use tiny amounts of fluoride.

除了降低糖淀粉的摄取量,在大数的牙膏饮用水中

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CNN 10 学生英语 2019年4月合集

Fluoride and teeth, compression and engines, X-rays and bone health or telegraph and wiring.

牙齿,压缩发动机,x 光骨骼健康或电报布线。

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Vox 观点

And for every liter of it, there is 0.8mg of fluoride in it.

每升水中含有 0.8 毫克的

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学60秒 听力 2015年3月合集

But the researchers found something that works even better than fluoride: iron.

那就是铁。

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VOA Special 2013年6月合集

Adding fluoride to the water makes teeth resistant to the bacteria that can cause tooth decay.

向水中添加氟能使牙齿能抵抗导致蛀牙的细菌。

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时差N小时

Dentists can help by giving you a fluoride treatment, but you have to brush and floss regularly.

医生还可以为你做治疗(在蛀牙部位涂上高浓度的氟,令初期蛀坏的部分还原),但是,你必须定期洗牙,还要经常使用牙线清洁牙齿。

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VOA Special 2015年9月合集

And they are quick to note that regular cleaning with fluoride toothpaste helps prevent cavities in the first place.

而且他们很快提醒大家,经常使用含氟牙膏刷牙有助于从最初就防止蛀牙。

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CNN 听力 2019年5月合集

Currently the FDA allows bottled water with added fluoride to contain between 0.8 and 1.7 milligrams per liter.

目前,美国食品药品监督管理局允加入瓶装水中的含量在每公升0.8至1.7毫克之间。

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Vox 观点

Municipalities set their own fluoride doses, and most said it around this amount.

各市政当局自行设定剂量,大数设定在这个范围内。

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学60秒 听力 2013年5月合集

They found that three different strains of cavity-causing bugs cling less tightly to enamel that's been rinsed with fluoride.

他们发现引起蛀牙的三种不同的菌株很少粘附于有加固的牙釉质表面

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学60秒 听力 2013年5月合集

They find that fluoride treatment can loosen bacteria's grip on tooth enamel. The study is in the journal Langmuir.

他们发现处理能缓解牙釉质里细菌的压力。这项研究发表在《朗缪尔》期刊上。

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Vox 观点

The pesticides on our food can have fluoride in it, too.

我们食上的农药也可能含有

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Vox 观点

And one thing he believes is that we should advise all US water systems to remove fluoride from public water.

而他相信的一件事是,我们应该建议所有美国水系统从公共用水中去除

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5分钟医学英语(Science in 5)

Something to remember is using toothpaste without fluoride is not effective against dental caries.

需要记住的是,使用不含氟的牙膏对预防龋齿是无效的。

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Crash Course 综合篇

For instance, to maximize the hydrogen fluoride production by adding or removing some of the substances.

例如,通过添加或去除某些质来最大限度地提高氟氢的产量。

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