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It reacts violently with oxygen difluoride and barium peroxide.

一氧化碳同氟化氧、氧化钡会发生剧烈反应。

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

对氯硝基氟化钾等为原料,经二步法合成了对氟胺。

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

氟化物保护牙齿被世界很多国家所使用。

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PFOA and other related long-chain fluorochemicals stick to blood proteins and masquerade as digestive acids.

PFOA其他相关的长链含氟化合物会附著在血液里的蛋白质,假装成消化酸分子。

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Crystalline polypyrene microsheets were electrosynthesized in the medium of boron trifluoride diethyl etherate for the first time.

在三氟化硼乙醚介质,电聚合芘首次制备出结晶型的聚芘微米片。

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

数据显示氟磷酸盐璃的热稳定性比氟化物好。

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Reaction of ferrocenylphenylcarbinol with ethereal solution of boron trifluoride in dichloride methane formed the relevant ferrocenylphenylmethyl carbocation.

二茂铁基基甲醇与三氟化硼-乙醚溶液在二氯甲烷中作用,形成二茂铁基甲基碳正离子。

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

甲醛丙酮为原料,氟化钾氧化铝作催化剂合成了苄叉丙酮。

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

氟化氢铵是一种产量用量都较大的无机氟盐,国内年产量在数万吨

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The effects of polyisobutene, LaF3, MCA, dialkyldithioaminoformaite on properties of lithium-calcium base grease have been discussed in this paper.

察了聚异丁烯、氟化镧、三聚氰胺氰尿酸复合物(MCA)、硫代氨基甲酸盐对锂-钙基脂性能的影响。

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The key technology and technics,which use Simons electrolyze trough with a falcial anode to synthesize lithium fluoroalkylphosphates,are discussed in this paper.

本文探讨了采用镍板为阳极的西蒙斯电解槽电解氟化制备氟烷基膦酸锂的有关工艺关键技术。

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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.

在原子能工业核武器生产中,氟化氢是制造六氟铀的原料,也是生产火箭燃料添加剂的原料。

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Sevoflurane is synthesized from aceton by vapor phase catalytic fluorination, vapor phase catalytic hydrogenation,chloridization and fluoromethylation, which gives a new synthetic method.

丙酮为原料,经氯化、气相氟化、气相氢化及氟甲基化等一系列改进的方法合成了七氟醚,提供了一条新的合成路线。

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The carbon-fluorine single bond is among the strongest known and results in PFA being virtually chemically insert and nonwettable by fluids such as water.

氟化碳单键间的结合力很强使得PFA(可溶性聚四氟乙烯)塑料不会被流体如水所介入湿润。

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Tussore oil was extracted by chemical .The fatty acid (FA) in tussore oil was saponificated and modified to methyl esters by different means .

研究了脂肪油的衍生化、三氟化硼、硫酸3种不同方法对脂肪油的皂化、甲酯化效果,并用GC/MS法对柞蚕中脂肪酸的成分进行了鉴定分析。

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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.

实验表明利用氟化璃光纤有望获得性能优异的有应用前景的低相干度集成化光源。

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Pyridine can react with halogens,nitronium fluoroborate, sulfur trioxide, boranes and chromium trioxide to form some useful organic reagents which are introduced briefly in the paper.

吡啶可卤素、硝基四氟化硼盐、三氧化硫、硼烷及三氧化铬反应,形成一些有用的有机试剂。

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What they'd concocted was chlorine trifluoride, the most vigorous fluorinating agent known to humanity.

他们制这种物质是三,人类所知最剧烈剂。

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加拿大剧拯救希望第一季

I need a flexible bronchoscope and an O.P.A.

给我拿可曲式气管镜还有乙醛。

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Fluorinating agents rip other molecules apart to replace their hydrogen atoms with fluorine.

剂会打破分子结构,然后用取代原来氢原子。

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6 Minute English 六分钟英语

You shouldn't believe everything you hear, Rob. Fluoride protects our teeth against decay.

你不应该听到什么都相信,罗伯。物能够保护我们牙齿不被腐蚀。

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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.

物和牙齿,压缩和发动机,x 光和骨骼健康或电报和布线。

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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.

医生还可以为你做疗(在蛀牙部位涂上高浓度物,令初期蛀坏部分还原),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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TED-Ed(视频版)

That strengthens teeth and encourages the growth of enamel crystals that build up a tooth's defenses against acid.

也添加了微量物可以强化牙齿、促进珐琅质生长。

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科学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.

他们发现引起蛀牙三种不同菌株很少粘附于有物加固牙釉质表面。

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科学60秒 听力 2014年8月合集

NASA's James Webb Space Telescope, due to launch in 2018, should be powerful enough to detect chlorofluorocarbons, CFCs.

将于2018年发射美国宇航局詹姆斯韦伯太空望远镜应该强大到足以检碳, 烃。

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国土安全 第5季

Forget about the police. Get rid of the DF.

别管什么警察了 毁掉物。

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Did You Know? – Verge Science

Making aluminum also releases super potent greenhouse gases, called perfluorocarbons.

铝还会释放超强温室气体,称为全碳。

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Engvid超级外教Ronnie-口语

They usually use a fluoride solution, and they scrape all the dirty stuff off your teeth.

他们通常使用物溶液,将牙齿上所有脏东西刮掉。

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科学60秒 听力 2015年3月合集

And that's where the fluoride hangs out, helping to stave off an acid attack of the enamel—in other words, a cavity.

物就在这里聚集,帮忙延缓阻挡牙釉质酸蚀—换句话说抑制蛀牙。

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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物质来最大限度地提高产量。

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科学60秒-科学美国人 2022年6月合集

To compound the problem, the liquids used for all this comfort — first chlorofluorocarbons and now hydrofluorocarbons — are super-strength greenhouse gases.

人们为了这份舒适而使用液体冷却剂——先是碳现在是氢碳——都是超强度温室气体,而这让问题变得更糟。

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CNN 10 学生英语 2019年4月合集

The U. S. Food and Drug Administration is considering a lower limit on the amount of fluoride that's allowed in bottled water.

美国食品和药物管理局正在考虑降低瓶装水中允许含量。

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CNN 10 学生英语 2019年4月合集

The American Dental Association, which supports adding fluoride to water, says the FDA's proposal would still work to prevent tooth decay.

支持向水中添加美国牙科协会表示,FDA建议仍然可以防止蛀牙。

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Crash Course 综合篇

Let's do this for hydrogen fluoride, or HF, an integral part of the process of refining gasoline.

让我们对氢 (HF) 执行此操作, 它是精炼汽油过程一个组成部分。

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CRI在线 2023年7月合集

A U. S. military base in Japan has acknowledged three incidents of chemical leakage containing organic fluorine compounds that raise health concerns.

驻日美军军事基地承认三起含有有机合物化学物质泄漏事件,这些事件引起了健康问题。

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Chlorine trifluoride is still manufactured and is used by semi-conductor companies to clean their equipment to within an inch of its life.

如今三还在生产并被半导体公司用来清洁设备,以极其小心方式。

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