metrewave radar

例句：

1. 1. The metrewave radar system is used to detect and track objects in the airspace.
   毫米波雷达系统用于探测和跟踪空中物体。
2. 2. The metrewave radar helped the military to locate enemy aircraft in real-time.
   毫米波雷达帮助军队实时定位敌机。
3. 3.The metrewave radar has become a crucial tool for surveillance and defense.
   毫米波雷达已成为监视和防御的关键工具。