The invention has simple process, little pollution in the preparing process and low producing cost.
本发明工艺简单，生产过程污染小，生产成本低。
Moreover, the method for preparing the copolymers is simple, easily controlled and low in cost.
该共聚物的制备方法简单，易于控制，成本较低廉。
Moreover, the method for preparing the copolymers is simple, easily controlled and low in cost.
该共聚物的制备方法简单，易于控制，成本较低廉。
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