draft differential

The technical measures of dropping mine ventilation resistance;

降低矿井通风阻力的技术措施

Survey and analysis on ventilation resistance of Jing ge zhuang mine;

荆各庄煤矿通风阻力测定与分析

Site test for ventilation resistance coefficient of shotcrete lining tunnel;

喷射混凝土衬砌隧道通风阻力系数测试研究

By determining the ventilation resistance of the mine shaft ventilation system, it is found that the ventilation resistance in return airways is particularly large and the ventilation degree is middle.

通过对矿井通风系统进行通风阻力测定,发现矿井回风段通风阻力过大且通风难易程度为中等。

Determination of Ventilation Resistance and Measures of Reducing Mine Ventilation Resistance in Muchengjian Coal Mine

木城涧矿通风阻力测定及降低矿井通风阻力对策

Retrograde ventilation is used for Wangjiazhai coal mine, both air leakage and ventilation resistance of the main shaft are largish.

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。

Resistance measuration and security analysis on ventilation system of Shouwangfen copper mine

寿王坟铜矿通风阻力测定与安全性分析

Analysis and Application of Ventilation Resistance Measurement in Pan'er Coal Mining Xisi Area

潘二煤矿西四采区通风阻力测定分析与应用

Experimental Study of the Ventilation Drag Parameters in a Railway Ballast Layer

铁路碎石道碴层通风阻力参数试验研究

Study of Pressure Loss Coefficient in HVAC Fittings;

通风管道局部构件阻力系数及减阻方法研究

Research on Flow Resistance of Inlet Air and Performance Optimization of Natural Draft Counterflow Wet Cooling Tower with Air Deflectors

具有导风板的自然通风逆流湿式冷却塔进风阻力研究及性能优化

The Program of Visualization of Mine Ventilation and Resistance Measurement Based on AutoCAD;

基于AutoCAD的矿井通风可视化和阻力测试程序编制

Compiling and application of the Calculator table of friction loss in air duct

《通风管道沿程阻力计算选用表》编制及设计应用

Traffic was interrupted by a snow storm.

交通被暴风雪阻断。

Fat can build up in the arteries， block the flow of blood， and cause a heart attack or stroke.

脂肪可积聚在动脉里，阻挡血液流通，并引起心力衰竭或造成中风。

Experiment and Numerical Simulation of Resistance Coefficient of 90° Bend Pipe with Low Reynolds Number in HVAC

通风空调低雷诺数90°弯管阻力系数的实验与数值模拟

Numerical and Experimental Study of Pressure Loss Coefficient in HVAC Fittings;

通风管道局部构件阻力系数的实验和数值模拟研究

forced draft, forced draught

压力通风,强制通风

An air leakage points identification model in branches of ventilation system was established based on airflow balance in all nodes and pressure balance along all circuits of ventilation system.

利用通风系统节点风流平衡关系和回路阻力平衡关系构建出了分支漏风点辨识模型。

electronic countermeasure resistant communication system

电子对抗阻力通信系统

Traffic in the city was interrupted By a snowstorm.

市内交通被暴风雪所阻断。