It is proved that the method of selection modificators by chemical bondparameter is suitable to the study of Cr cast iron.
证明了用键参数函数选择变质剂的方法也适用于中铬铸铁的研究。
2
The selection principal of low toxic mixed solvent of CR adhesive is depended upon hydrogen bond index and solubility parameter of the solvent.
氯丁胶粘剂的低毒混合溶剂的选择原则是：根据溶剂的氢键指数及溶解度参数。
3
By using the inductive effect index I as a characteristic bond-parameter, a formula is given describing the relation between the structure of N-nitrosamines and its acute toxicity.