自从蒙特利尔协议签订以来,开始了对不同的CFC_s替代物的广泛讨论。必须仔细考虑许多不同的方面,包括如臭氧层的衰减,全球变暖,易燃性和有毒性等。由于没有一种工质在上述四方面都表现为良性结果,我们就必须意识到至少存在一种危险性。开发研究(替代物)沿 Since the signing of the Montreal Protocol, there has been extensive discussion of different alternatives to CFCs. Many different aspects must be carefully considered, including decay of the ozone layer, global warming, flammability and toxicity. Since none of the working fluids exhibit benign results in all four of these dimensions, we must be aware that there is at least one danger. Develop research (alternative) along