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噪声温度
noise temperature
- 通过制冷可以很大程度上降低接收机的噪声温度，从而提高接收机的灵敏度。
Through the refrigeration, we can greatly reduce the noise temperature of the receiver, so as to improve the sensitivity of the receiver. - 等效噪声温度高达数十万度的A/D模块，引起了数字接收机性能的深刻变化。
The performance of a digital receiver will be changed significantly when the equivalent noise temperature of the A/D module rises to hundred thousands degrees. - 该系统主要完成两大类功能：测试低噪声器件的噪声温度和校准固态噪声源的超噪比。
The system provides two major functions including measuring noise temperature of low noise devices and calibrating the Excess noise Ratio (ENR) of solid-state noise sources.
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