radio noise figure

例句：

1. 1.The radio noise figure of the new receiver is much better than that of the old one.
   新接收机的无线电噪声系数比旧的要好得多。
2. 2. The noise figure of the microwave oven is very low, which makes it easy to use.
   微波炉的噪声系数非常低，这使得使用起来非常方便。
3. 3. The noise figure of the communication system is an important factor to consider when designing a new system.
   通信系统的噪声系数是设计新系统时需要考虑的一个重要因素。