pulse length modulation

例句：

1. 1. This digitalcommunication system uses pulse length modulation to transmit data over long distances.
   这个数字通信系统使用脉冲长度调制来在长距离上传输数据。
2. 2. The radio signal is transmitted using pulse length modulation, which allows for high-speed data transmission.
   无线电信号通过脉冲长度调制进行传输，这允许了高速数据传输。
3. 3. In medical imaging, pulse length modulation is used to enhance the quality of images produced by X-rays.
   在医学成像中，脉冲长度调制被用来提高X射线产生的图像质量。