【化】 预聚体

摘要介绍了一种用于管道防渗止水的双组分聚氨酯弹性密封材料的开发，并讨论了基剂预聚体聚合物结构、异氰酸酯和羟基的摩尔比以及复合固化剂组分对材料性能的影响。

legally performed

see also catchwords for operations performed

contract to be performed by third party

performed winding【电】

see also catchwords for particular operations performed