而且在这些当中有些你或许认识，是二氯二氟化碳，它也是众所周知的氟利昂。
And, this one here, some of you might recognize, is dichlorodifluoromethane. It's also known as a CFC.
环境保护署称，它的发现是基于对六种温室气体的极其严格科学评判而做出的，这六种气体包括：二氧化碳，甲烷，一氧化二氮，氢氟碳化物，全氟碳化物以及六氟化硫。
The EPA said its finding was based on a rigorous review of science on six greenhouse gases: carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride.
它与CO2的关系就如同火炉之于蜡烛。一公斤六氟化硫产生的热量与23吨二氧化碳产生的热量相当。
It is to carbon dioxide as a furnace to a candle: one kilogram of the stuff causes as much warming as 23 tonnes of carbon dioxide.
一种可选的办法，具有讽刺意味，是用二氧化碳替代在这类系统中使用的合成氟化烃制冷剂，他说：这类气体造成全球变暖的可能性是二氧化碳的四千倍。
One option, ironically, is to use carbon dioxide to replace the synthetic HFC refrigerants used in such systems, he says: such gases can have around 4000 times the global warming potential of CO2.
最后，炼油厂排放很多的气体，如二氧化硫(SO2)、二氧化氮(NO2)、二氧化碳、一氧化碳、甲烷、双环氧乙烷、氟化氢、氯、苯和其他气体。
Finally, refineries emit many gases like sulphur dioxide (SO2), nitrogen oxide (NO2), carbon dioxide, carbon monoxide, methane, dioxins, hydrogen fluoride, chlorine, benzene and others.
聚乙二醇可作为卤素交换氟化反应有效的相转移催化剂。
Polyethylene glycols can be used as effective phase transfer catalyst in halogen exchange fluorination.
单谱线多元件透镜可以有不同的外形和材料，有玻璃的，二氧化硅的，蓝宝石的和钙氟化合物的。
Singlet and multielement lenses are available in a wide variety of configurations and materials, including glass, fused silica, sapphire, and calcium fluoride.
本研究确立了适宜的工艺条件，使2，6-二氯苯甲腈氟化转化率提高至99．00％以上，并保持90％以上的高收率。
By setting up the proper process conditions, the conversion rate of 2,6-dichlorobenzonitrile in fluoration was over 99.00% and the yield was over 90%.
间接氟化法则主要介绍了一些新的含- CF_2 -的合成砌块在合成二氟亚甲基化合物中的应用。
As indirect method, the use of new CF2 - containing building blocks in the synthesis of CF2 - containing compounds has been summarized.
无需使用和消耗大量化学试剂便可获得合格的二氧化铀，为干法或湿法氟化提供原料。
The process can yield nuclear pure uranium dioxide under making no use of a great number of chemical reagent.
提出了一种以2，3-二氯硝基苯为原料，经氟化、高温氯化、硝化、再氟化反应合成2，3，4-三氟硝基苯的新工艺路线。
A method is given for synthesis of 2,3,4 trifluoronitrobenzene from 2,3 dichloronitrobenzene by fluorination, chlorination, nitration, etc.
本发明的电镀铝液组成如下：二甲苯、三乙基铝、氟化钠、0.01% - 8%的添加剂组成。
The electroplating aluminum solution comprises the following components: xylene, tri-ethyl aluminum, sodium fluoride, and 0.01-8% additive.
和包括三聚磷酸钠、硅氟化钠、硫酸钠、氢氧化钠、硬脂酸钙和氯化镁的无机组合物的第二溶液。
The second one, composite inorganic solution, includes sodium tripolyphosphate, sodium silicofluoride, sodium sulphate, sodium hydroxide, calcium stearate and magnesium chloride.
BODIPY（氟化硼络合二吡咯甲川类）荧光染料由于其独特的光化学光物理性质，成为近十几年研究的热点。
In the last decades, boron dipyrromethene dyes (BODIPY) have draw much attention of the researchers for their exceptional photochemistry and photophysical properties.
近年来，大气酸雨问题日益严重，造成酸雨的主要原因是大气中二氧化硫、氟化氢等有毒气体含量的增加。
Recent years, the harm of acid rain is growing, mainly due to the increase of SO2, HF and other toxic gases of the air.
近年来，大气酸雨问题日益严重，造成酸雨的主要原因是大气中二氧化硫、氟化氢等有毒气体含量的增加。
Recent years, the harm of acid rain is growing, mainly due to the increase of SO2, HF and other toxic gases of the air.
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