也许这样一来，就能够发现过量的氯氟化碳(如果外星人也使用头发定型剂的话)。
Or maybe finding excessive chlorofluorocarbons (if the aliens all use hairspray).
一种含氯的碳氟化合物，以前用作制冷剂和喷雾剂罐的推进物。
A fluorocarbon with chlorine; formerly used as a refrigerant and as a propellant in aerosol cans.
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.
我们使用的氯氟化碳等臭氧消耗物质将保护我们免受有害的太阳紫外线辐射的臭氧层撕裂出一个空洞。
Our use of ozone-depleting substances such as chlorofluorocarbons (CFCs) had torn a hole in the ozone layer that protects us from the sun's harmful ultraviolet radiation.
1987年9月，24个国家在加拿大的蒙特利尔签署了一个协议，以限制氯氟化碳的生产。
In September 1987, 24 nations signed an agreement in Montreal, Canada, to limit the production of CFC's.
电子设备制造商使用氯氟化碳清洗金属，并且一般都利用氯氟化碳作为制冷剂和制造泡沫绝缘材料。
Electronic equipment manufacturers use CFC's to clean metal, and CFC's are commonly used as refrigerants and to make foam insulation.
一批被广泛应用的称为氯氟化碳的气体造成了最大的化学威胁。
A group of widely used gases called chlorofluorocarbons (CFC's) posed the greatest chemical threat.
对科学家和化学工程师的挑战，是找到与氯氟化碳一样有效井没有其他有害效应的替代物。
The challenge for scientists and chemical engineers is to find substitutes that will be as effective as CFC's and that will not have some other group of harmful effects.
这样，即使立即停止所有氯氟化碳的生产，臭氧损耗的威胁也会持续一个多世纪。
So even if all CFC production stopped immediately, the threat of ozone depletion would continue for more than a century.
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.
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.
应用推荐