选择矿井主扇机，需依据矿井所需风量、通风阻力。
Choosing main fan in mine is according to the amount of wind that the mine well needs and the well ventilated resistance.
王家寨煤矿为中央并列式通风，漏风量较大，主井通风阻力较大。
Retrograde ventilation is used for Wangjiazhai coal mine, both air leakage and ventilation resistance of the main shaft are largish.
根据千秋矿通风阻力分布和生产布置，对通风方案进行比较，优化选择。
According to the ventilation resistance distribution and production plan, the optimum ventilation plan was selected after comparison.
经计算主测定路线上的通风阻力测定相对误差为1.94%，其精度符合要求。
The relative error of the ventilation resistance measured on the main measuring route was 1.94% and the accuracy could meet the requirement.
基于气压计基点测定法，介绍了保德煤矿通风阻力测定的布置方案和计算理论依据。
Based on the base point measuring method of the barometer, the layout alternatives and the calculation theoretical basis of the ventilation resistance measurement in Baode Mine were introduced.
多种方法的优化组合、综合应用的思想与目前的通风阻力测定方法相比有明显的优点。
The thought has obvious advantage that various methods are optimized gather together and synthesized apply compares with the current method of mine ventilation resistance determine.
前言：根据《煤矿安全规程》规定，对兴隆煤矿进行了通风阻力测定和主通风机装置性能测试。
Based on the "Security Rules for Coal Mine", the ventilation resistance and main ventilator behavior in Xing-long Mine is measured.
分析了BKK - 15 K一体化飞行防护装备(简称BKK - 15k)通风结构、通风阻力及散热作用。
The ventilating structure, resistance and heat dissipation of BKK-15K integrated flying protective device (in short, called BKK-15K) were analyzed.
笔者在祁南煤矿通风技术测定的基础上，对该矿井通风系统的稳定性、通风阻力分布情况和主要通风机工作性能进行了详细分析。
Based on the technical ventilation measurement, the stability, resistance distribution, and characteristics of main fans of the ventilation system in Qinan coal mine are analyzed in detail.
探讨了风压作用下大开口的自然通风阻力特性，并提出了用局部损失迭加法来计算阻力损失，即认为通过建筑物的气流是由不同的突缩段和突扩段的组合。
Through the discussion of the resistance properties of natural ventilation induced by wind force, a method of local pressure loss superposition was proposed to calculate the pressure loss.
笔者应用数字实验方法，通过调节分支阻力，研究它对通风系统的影响。
By digital experiment, the effect of adjusting the branch resistance on ventilation system was studied.
应用流体力学和工业通风原理，分析了罗茨中央真空吸尘系统的管网阻力特性；
Tube Web obstruction property of Roots central vacuum cleaning system is analyzed with fluid mechanics and industry ventilate principle.
在危险化学品生产和销毁工厂的通风系统中一定要设置滤毒装置，介绍了滤毒过滤器的设计与阻力确定方法。
The filter must be set up in ventilation system of the production and disposal of dangerous chemicals and the design and resistance determination methods of filter with toxic gas are also introduced.
粮层阻力是粮食干燥、储粮机械通风等工艺设计中的关键参数。
Grain bulk resistance is a key parameter in the technological design of grain drying and mechanical ventilation for stored grains.
标准风阻值和标准摩擦阻力系数值作为矿井通风技术管理的基本资料对矿井通风管理具有重要意义。
The standard value of ventilation resistance and coefficient of frictional resistance is very significant to the ventilation management of the mine as the basic data.
隧道的流动阻力和风机在隧道内的升压力是隧道通风计算的基础，是进行通风计算首先要确定的参数。
The flow resistance of the tunnel and the boosting capacity of jet fan in the tunnel are the foundation to calculate the tunnel ventilation, they are the first ascertained parameters.
在管道通风系统中的湍流区内，震荡波动的阻力气压与推力气压之间的关系已被阐述。
The relationship between the fluctuating drag and lift pressures in the turbulent area within a flow duct is given.
强调排烟工况下管网总阻力、漏风量均远大于通风空调工况，必须严格认真地计算。
Emphasizes that the resistance of the pipe system and the air infiltration rate under smoke exhausting are far more than those under ventilation, so as to need a careful calculation.
对采用变流量、变阻力调节式通风系统整体效率的影响因素进行了探讨。
The factors that influence the whole efficiency of ventilating system adopting adjustment to variable air mass flow and friction were investigated.
他说，在Thielert发动机设计方案中，散热器位于发动机整流罩下方，这导致散热效率低下，阻力增加，因为它的散热器太小了，而通风量有不足。
In the Thielert approach, he says, the radiator is under the engine cowling, which leads to low cooling efficiency and more drag, because of too small a radiator and poor ducting.
经实施后，降低了通风系统阻力，提高了矿井通风系统稳定性和抗灾能力。
The results showed that the resistance of mine ventilation system was reduced and the stability and ability of fighting against natural calamities of mine ventilation network were improved.
前言：科学地进行“以风定产”是实现矿井安全生产的重要保证和前提之一。 矿井实际供风量取决于主要通风机特性和井巷阻力特性的匹配性。
Scientifically to carry on" daily output determination matched with the fan actual ability" is important assurance and one of the premises that carries out the safe production of the mine.
可以比较分析不同相对开口大小和不同相对位置的通风房间的阻力特性不同，得到引起通风流量不同的原因及其影响因素。
We can compare and analyze the difference of the resistance properties when there are different relative opening areas and positions. Thus the factors influencing the airflow rates can be found.
可以比较分析不同相对开口大小和不同相对位置的通风房间的阻力特性不同，得到引起通风流量不同的原因及其影响因素。
We can compare and analyze the difference of the resistance properties when there are different relative opening areas and positions. Thus the factors influencing the airflow rates can be found.
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