mark-to-space ratio的用法和样例：
例句
- The test results also show the outlet humidity can be controlled in long range in it by this sort of humidifier under its different duty ratio.
另外仿真和实验结果也表明该加湿装置能根据加湿器工作时间占空比的不同，在很宽的范围内控制出口的湿度。 - Finally,simulations are performed to verify the proposed DTC scheme based on improved discrete duty ratio control technology.
对所提出的基于改进离散占空比控制技术的直接转矩控制系统进行了仿真实验。
