英语语法分析

Polyvalent Metal Hydroxyl Complexes.

多价金属羟基络合物；

The polyvalent efficacy of MPS has been established in a large number of experimental and clinical studies.

多磺酸粘多糖（MPS）的多种药效已经被大量的实验室和临床研究所证实。

A new calculating model was derived from the relation of absolute hardness to the radii of polyvalent ions.

从绝对硬度与离子半径的关系导出一个高价离子电子亲合能的计算模型。