A proposal for control of airflow in a mine fire is proposed by optimization of air quantity in a ventilation network.
提出了用通风网络风量优化计算的方法求解矿井火灾时期的风流控制方案。
Efficient ventilation and sound air current are significant to improve indoor air quality, control the contamination concentration, and ensure the realization of healthy and comfort air-condition.
有效地通风和合理的气流组织对于改善室内空气品质，控制室内污染物浓度，保证实现健康建筑、健康舒适性空调有着重要的意义。
The dual control mode is one of the three new mechanical ventilation modes.
双重控制模式是机械通气的三大新模式之一。
This paper brings forward the indoor VOCs concentration control means, such as source controlling, ventilation and indoor air purifying based on the trait of VOCs emitting and distributing.
针对影响污染物散发及分布特点，给出了室内挥发性有机化合物的具体控制方法，如源头控制、通风及室内空气净化等。
The article analyzes specifically dust control for effectiveness reasonableness and introduces calculating methods of blow and exhaust wind volume of Push pull ventilation device.
对其烟尘控制的有效性和合理性作了具体分析，同时介绍了吹吸式通风装置送、排风量的计算方法。
The paper introduced the importance and control goal of tunnel ventilation control system, and discussed its realization and applied effect.
介绍了隧道通风控制系统的重要性和控制的目的，并介绍了隧道控制系统的实现以及应用的效果。
Objective To research and evaluate the ventilation and heat exchange character of the sealed-cabin temperature and humidity control system in manned space flight on the ground.
目的在地面条件下研究、评估载人航天飞行中密闭舱内温湿度控制系统的通风和换热特性。
To research sanitary condition of the centralized air ventilation system in public place; provide the basis for sanitary control.
调查分析公共场所集中空调通风系统卫生状况，为卫生管理提供依据。
It mainly deals with the design method and principle of fire damper, positive pressure control, ventilation of stair room and running logic of HVAC in emergence situation.
正压控制的设计原则和方法；楼梯间的通风设计以及紧急状态下HVAC系统的运行逻辑设计。
All automobile engines now built are equipped with the positive-crankcase ventilation system of crankcase emission control.
所有现代制造的汽车发动机，都需要装备控制曲轴箱有害污染的曲轴箱强制通风系统。
Based on hydromechanics affinity theory and major control factor of highway tunnel ventilation, the paper had made certain highway tunnel ventilation boundary condition.
根据流动相似性理论和隧道通风主要控制因素，确定隧道通风的边界条件；
Objective to explore the curative effects of positive pressure control and low tidal volume ventilation in the treatment of patients with traumatic acute respiratory distress syndrome (ARDS).
目的探讨压力控制呼气末正压呼吸小潮气量通气模式治疗创伤性急性呼吸窘迫综合征的疗效。
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。
As a key to tunnel smoke control, the critical velocity refers to a minimum vertical ventilation velocity which can effectively control the smoke under the direction of fire source without reversing.
临界风速是隧道烟气控制的关键所在，其指隧道火灾过程中能有效控制烟气于火源下风方向而不发生逆流的最小纵向通风风速。
The ventilation of gas control.
对煤气的通气量进行控制。
Discussed are the interference prevention problems of the automatic inspection, control and ventilation system on passenger cars.
对客车上自动检测、控制及通风系统的抗干扰问题进行了论述。
In the absence of effective treatment, control of silicosis depends on prevention with face masks, proper ventilation, and X-ray monitoring of workers' lungs.
在缺乏有效治疗的情况下，控制硅肺主要在预防，要使用面罩、适当通风、定期对工人肺部进行X光检查。
The tunnel ventilation control systems of expressways based on the theory of Artificial Intelligence are studied and developed.
研究并设计了一种基于人工智能理论的公路隧道智能通风控制系统。
Presents a method to make the smoke exhaust rate equal to the ventilation rate by smoke control zoning for the usage of the dual purpose fan.
为实现风机的兼用，提出通过划分防烟分区，使排烟风量与通风风量保持一致的方法。
The density control of gas and coal dust is done through optimal allotment of the ventilation quantity in the coal mine well.
煤矿井下瓦斯和煤尘的浓度控制是通过煤矿井下通风量的优化分配实现的，是实现煤矿安全生产的关键环节。
Pesents the air conditioning pattern and the design of cold and heat sources, water system, ventilation and smoke management systems, and automatic control system.
介绍了空调形式、冷热源、水系统、通风及防排烟、自控系统的设计。
It is difficult for the modeling of the tunnel ventilation system, thus two kinds of the learning control strategy for tunnel ventilation are stated.
隧道通风系统的建模较困难，提出了两种隧道通风控制的学习控制策略。
The on-the-spot application showed that it is very effective for pulse ventilation in prevention and control of accumulated gas at the upper corner angle of coal face.
现场应用结果表明，射流脉冲通风对治理上隅角瓦斯积聚具有良好的效果。
A field experiment shows that the rotary jet pulse ventilation is very effective for prevention and control of gas accumulation in the upper corner of coal faces.
现场试验表明，环绕射流脉冲通风对治理上隅角瓦斯积聚的效果良好。
Presents designs of the air conditioning system, ventilation system, smoke management system and automatic control system.
介绍了空调系统、通风系统、防排烟系统及自控系统等的设计。
Mine, the causes of natural thermal potential difference in return air in main shaft and its influence on mine ventilation system and the control methods.
阐述了造成主井回风的自然热位差产生原因和对通风系统的影响，以及治理办法。
Practices have proved that effective gas extraction can improve ventilation management, gas control and reliability of work safety in the mine.
实践证明，通过对矿井瓦斯的有效抽采，可以使矿井的通风管理、瓦斯治理工作稳步提高，矿井安全可靠度增强。
The thesis demonstrates the feasibility of natural ventilation to control concentration of noxious gas in the sewer tunnel.
并论证利用自然风稀释污水隧道内有害气体浓度的理论可行性。
The thesis demonstrates the feasibility of natural ventilation to control concentration of noxious gas in the sewer tunnel.
并论证利用自然风稀释污水隧道内有害气体浓度的理论可行性。
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