pulsed造句怎么写
- 造句
- 关注:2.1W次
In the northeast a silvergreen serpentine aurora pulsed and quivered gently.
The transmitter was pulsed by an electron tube.
What is unusual is that this laser is the exact inverse of most pulsed lasers: it's on most of the time, but periodically turns itself off for a short time.
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