Because the police have to sacrifice the stability of society, they sacrificed, is it a shady light thing?
因为警察的牺牲才有社会的安定，他们牺牲了，难道是一件见不得光的事吗？
A polyurethane adhesive with high light stability was prepared using hexamethylene diisocyanate and used for bonding PVC, PU and leather.
采用己二异氰酸酯为原料，制备光稳定性的聚氨酯胶粘剂，用于PV C . PU及牛皮革的粘接。
The night wind or stability in kite hung a string of arrows color small lanterns, like the shining stars, called "the absolute being light".
夜里在风筝下或风稳拉线上挂上一串串彩色的小灯笼，象闪烁的明星，被称为“神灯”。
应用推荐