The establishment of Hall thruster experiment system to measure high-frequency radiation.
建立霍尔推力器内高频辐射实验测量系统。
Radiation must have exactly the frequency.
辐射必须严格具有频率。
The light emitted is at a lower frequency than the original radiation.
所发出的光要比所受照射的光频率低。
The light emitted is at a lower frequency than the original radiation.
所发出的光要比所受照射的光频率低。
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