radar beam的用法和樣例：
例句
- A radar beam picks out the moving target and stays with it all the time.
雷達波束能辨認出活動的目標，並一直跟蹤該目標。 - The bandwidth of the instantaneous wideband phased array radar is limited by the aperture overlay time, and will cause the direction of the beam changed.
瞬時寬頻相控陣雷達的帶寬受孔徑渡越時間的限制，會造成雷達波束指向的變化。
