对酸雨PH值界限的商讨

Discussion on the Demarcation of PH Value of Acid Rain

环保组织一直以来都把PH =5 .6作为酸雨PH值的界限 ,但由于地域性和自然条件的不同 ,这一标准在使用过程中存在着争议 ,因此就确立PH =5 .

Organizations of environmental protection have been taking PH=5.6 as the demarcation line of PH value of acid rain,however,owing to different regions and natural conditions,there are some arguements on this norm in the process of use.Therefore,the author puts forward his own understanding of the demarcation of PH value of acid rain.