Introducing equivalent person-density, explores the ultimate equivalent person-density at the largest air change rate the criterion regulated.

Under same air change rate, the particle deposition in horizontal air supply is 65% less than that in vertical supply model.

医护人员周围的粒子浓度高于相近换气次数下的垂直流送风方式。手术关键区上的沉降粒子数明显低于垂直送风方式，相近的换气次数下，粒子减少率约为65%。

Air change rate was calculated by using CO2 two-parameter build-up method and one-parameter decay technique.

房间的换气次数根据两参数CO2浓度上升法和单参数浓度下降法进行计算。

Especially discusses the ways of choosing a proper air change rate.

讨论了换气次数的正确选取方法。

When increasing the air change rate in the underground space, the radon concentration in the air will fall fast.

在较高的氡浓度状态下，室内氡浓度对通风十分敏感，增大地下空间的通风换气率，会使空气氡浓度大幅度的降低。

This paper proposes the design plan of automatic loading chest machine and introduces in detail the design of control system about the circuit, air channel and software, etc.

提出了全自动装箱机的设计方案，并从电路，气路和软件等方面具体介绍了控制系统的设计。

Presently, there are differently extent vibration at the cold air channel system and flue of some boilers these worked many years.

目前，某些运行多年的锅炉，其送风机出口冷风道存在不同程度的振动。

Experimental study of gas-particle two-phase flow in the primary air channel of direct-flow pulverized coal burner

直流燃烧器一次风通道气固两相流实验研究

Boiler is one of key equipments in power plant; the cold air channel system will directly affect the work of boiler.

锅炉是发电厂的关键设备之一，冷风道系统的安全平稳运行直接影响到锅炉的运行。

This paper elucidates the factors and mechanism which result in vibration of the cold air channel system in detail.

本文详细地阐明了引起锅炉冷风道系统振动的各种因素及振动机理。

Blocking Fault Treatment of Expansion Air Channel of a Plate Hot Exchanger in an Air Separation Device

空分设备板式换热器膨胀空气通道堵塞事故处理

Development or uniform air channel in air-conditioned passenger cars

空调客车均匀送风风道的研制

Analysis of Boiler Air Channel's Flow Field and Study on Measures of Reducing Vibration and Energy Conservation

锅炉冷风道的流场分析与减振节能措施研究

Cause and treatment of air channel blockage at main heat exchanger

主换热器空气通道堵塞原因分析及处理

'I would imagine it's not far away before we deploy something to go down and have a look,' Air Chief Marshal Houston said, referring to the underwater vehicles.

空军上将休斯顿说，他认为这或许意味着距离投放水下工具进行搜索不远了。

Air Chief Marshal Angus Houston, who is leading the multinational search, said Monday that within three days, search crews will complete the search for floating material.

负责牵头多国搜索行动的澳大利亚空军上将休斯敦（Angus Houston）周一表示，搜寻队员将在三天内完成对漂浮物的搜寻。

It is headed by retired air chief marshal Angus Houston.

该中心由已退休的澳大利亚空军上将奥古斯•豪斯顿（Angus Houston）领导。

Turbulent diffusion of the entrained air in a two-dimensional chute flow

均匀水流掺气的紊动扩散

He began to turn over in the air when his chute opened, and there were problems with the lines at first.

当他打开伞时，他就开始在空中翻转，并且在刚开始时伞线还有一些问题。

Design and Calculation of Air Conveying Chute

空气输送流槽的设计计算

In order to effectively reduce the vibration of the air chute and preheater of 130t/ h boiler, based on the measurement, theoretical analysis and calculation, the source, the distribution and the frequency characteristic of the vibration are identified.

针对130t/h锅炉冷风道和空气预热器振动十分严重的问题，通过现场测试和理论分析计算，识别其振动产生的原因、振动分布及频谱特性。