law of definite proportion 定比律 ; [化学] 定比定律
assume a definite proportion 占一定比例
possesses a definite proportion 占有一定的比例
The law of definite proportion states that different samples of a pure chemical substance always contain the same proportion of elements by mass.
定比定律是说一个纯净物中每种元素的质量比是一定的。
The materials are dissolved in an aqueous solvent in definite proportion to form the micelle by self-assembly;
材料按一定比例溶于含水溶剂，自发组装成胶束；
Some ionic compounds form crystals that in-corporate a definite proportion of molecules of water as well as the ions of the compound itself.
一些离子化合物形成含一定比例的水分子和离子化合物的晶体。
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