active microwave sensor的用法和样例：
- A pill millimeter microwave sensor technique for detecting and identifying airdrome runways by three beams was discussed.
- Using non-invasive microwave sensor, microwave flowmeter has no effect on flowing field and is easy to fix and use, has the advantages of real-time online.
- Synthetic Aperture Radar (SAR) is a kind of active microwave imaging radar, which utilizes the method of aperture synthesis to achieve high resolution in the azimuth direction.
合成孔径雷达(Synthetic Aperture Radar,SAR)是一种主动式的微波成像雷达，它利用孔径合成的方法获得方位向的高分辨率。
- The orient has been playing an active role in the world economy.
- He is an active member of the school's stamp club.