不可渗透的粘土限制了水和黄腐酸的向下渗透，从而减少了化学风化和土壤灰化作用。
Impermeable clay limits downward percolation of water and fulvic acids, reducing chemical weathering and podzolization.
消化液中所含的酶会渗透入咖啡豆——通常都是苏门答腊的阿拉伯咖啡豆——用一种微妙的方式改变了咖啡豆的化学元素。
The enzymes penetrate the beans — usually arabica in Sumatra — and change their chemical balance in subtle ways.
紫外线过滤器占印度过滤器市场的三分之二，反渗透式，化学过滤器，占其余的三分之一。
UV filters have about two-thirds of the Indian market, with reverse osmosis and chemical filters accounting for the rest.
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