These composite materials have superiorities in size stability, formability, stretching resistance and impact resistance.这种复合材料在尺寸稳定性 、 成型性 、 抗张力和抗冲击方面均具优势.The experimental parameters are optimized, and the results analy...
a big department store大型百货商店He volunteered to serve as the manager of our department store.他自荐当我们商场的经理.Yesterday, we went to the department store and nowhere else.昨天我们到百货公司去了,其他什么地方也没去....