Its test results have shown an improved ventilation, controlled stope self combustion and less ground pressure activity.
实验结果表明该方法通风效果改善，采场自燃得到控制，地压活动减少。
Tunnel ventilation process is approximately a system of time lag of first order, real time control of wind pressure in tunnel pipe is adopted self-tuning fuzzy PID.
隧道通风过程可近似认为是一个一阶时滞系统，系统采用自整定模糊pid对隧道管网的风压进行实时控制。
Method Investigate 52 patients undergoing family non-invasive ventilation treatment by self-designed questionnaire.
方法自行设计调查问卷，对52例家庭无创通气治疗患者进行调查。
Method Investigate 52 patients undergoing family non-invasive ventilation treatment by self-designed questionnaire.
方法自行设计调查问卷，对52例家庭无创通气治疗患者进行调查。
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