知识贝壳
知识贝壳
所属栏目：英汉双解生物学
The deposition of acids by natu-ral precipitation (e. g. rain,snow,fog),leading to acid pollution. The very diluteacids are formed by reaction of gaseous wasteproducts (e. g. sulfur dioxide,nitrogen ox-ide ,or carbon monoxide ),with moisturepresent in the ......（本文共 699 字 ） [阅读本文] >>