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.
- The orient has been playing an active role in the world economy.
- He is an active member of the school's stamp club.