The precision estimation of RCS is very important for aerocraft stealth design.目标RCS的精确计算和预估是飞行器隐身设计极其重要的一部分.High - speed reentry aerocraft is usually with terminal guidance system.高速 再入飞行器通常具有末制导系统.So the effect of unst...
利用显微镜检查组织，以排除或确认癌变。The tissue is examined microscopically to rule out or confirm cancer.这架显微镜内有价值数百美元的电子元件。The microscope contains a few hundred dollars-worth of electronic bits and bobs.显微镜和望远镜等光学仪器optical instruments s...