The calculation models are set up on average speed and Max speed in back field and jet effect distance, new theoretical reference is provided for effective ventilation in heading fa.
给出了回流区平均速度、最大回流速度及射流作用距离的计算模型，为掘进工作面合理有效通风提供了新的理论依据。
When in MAX or MIN display mode, if there is no key pressing within 10 seconds, it will automatically go back to the current temperature and relative humidity display mode.
当在MAX或MIN显示模式时，若10秒钟无按键，则自动返回当前温度和相对湿度显示模式。
When in MAX or MIN display mode, if there is no key pressing within 10 seconds, it will automatically go back to the current temperature and relative humidity display mode.
当在MAX或MIN显示模式时，若10秒钟无按键，则自动返回当前温度和相对湿度显示模式。
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