In contrast, the lives of girls in well-to-do families were often very sheltered...相反，生活在富裕家庭的女孩子通常都备受呵护。They sheltered beneath their umbrellas.他们躲到了伞下.sheltered housing for old people老人福利院British industry was sheltered ...
It was said that washing powders containing enzymes remove stains more efficiently.据说加酶洗衣粉除污更有效.Honey is basically a compound of water, two types of sugar, vitamins and enzymes.蜂蜜基本上是水、两种糖、几种维生素和酶的混合物。Lysosomal enzymes a...
The organic compounds are mainly benzoic acid anhydride , benzophenone, and so on.生成的有机化合物成分比较复杂,主要成分有苯甲酸酐、苯甲酮等.The uses and synthetic methods on 2,4 - Dichloro - 5 - Fluoro - benzoic acid were described in detail.简要概述了2...