microwave maser
微波激射器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The use of a background plasma in a dielectric Cherenkov maser can effectively increase the efficiency and the microwave power output of the device.
在介质切伦可夫脉塞中加入背景等离子体可 有效地提高器件的 效率和微波输出 功率。
youdao
Before the laser, scientists developed a similar device: a maser which stands for Microwave Amplification by Stimulated Emission of Radiation.
VOA: special.2010.09.01
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