Applying the common physical and chemical method can not get a well effect.
采用一般的物理与化学的方法清洗效果不好。
The chemical structure of the chains also has a tremendous effect on the properties.
链内结构：原子链的化学结构对性能也有很大影响。
Nitrite as a chemical pollutant has a bad effect on people's health.
亚硝酸盐作为一种化学性污染物，与人们的饮食、健康有密切的关系。
Nitrite as a chemical pollutant has a bad effect on people's health.
亚硝酸盐作为一种化学性污染物，与人们的饮食、健康有密切的关系。
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