Water - borne polyurethane is the predominant material of membrane pressing adhesive.水性 聚氨酯是真空吸塑胶的主要成分.The water - borne polyurethane was based on polyester diol and toluene diisocyanate etc.以聚酯多元醇、甲苯二异氰酸酯为主要原料合成了 水性 聚氨酯...
He waited several minutes for a car to pull up alongside.他等了几分钟,直到一辆汽车靠边停下。Pull up a chair and dig in!拉把椅子过来开吃吧!Please pull up a chair and join the conversation.请拿过把椅子来一起聊天....