电视与幻灯大不相同.It is a far cry from a magic lantern to television.今日早上我们要上幻灯课.This morning we are going to have a slide show class.他们每周一次在物理课上放映幻灯.Slides are shown once a week in their physics class....
最后为了减少钢坯表面的温差, 作者对现有除鳞系统提出了相应的调整方案.Finally, two adjustment plans were made for improving the surface temperature uniformity.高压水 除鳞喷嘴是除鳞设备的关键零件.High - pressure water descaling spray nozzle is the crucial element of descal...