noise temperature ratio

例句：

1. 1. The noise temperature ratio is a measure of how much sound energy is lost due to absorption by the environment.
   噪声温度比是一个衡量由于环境吸收而损失多少声能的指标。
2. 2. In acoustics, the noise temperature ratio can affect the perceived loudness of a sound.
   在声学中，噪声温度比会影响声音的感知响度。
3. 3. The engineer used the noise temperature ratio to optimize the design of the microphone system.
   工程师利用噪声温度比来优化麦克风系统的设计方案。