The equation of air demand was derived from the theory of oxygen transfer in aeration.

A study of prototype law of air demand in flood control conduits

泄洪管道需气量原型规律的研究

The result shows that the apparent porosity exerts greater influence on the intensity of cement paste. To add air-detraining admixture and water reducer in the cement paste can obviously reduce the porosity and increase the intensity.

结果表明，表观孔隙率对水泥石的强度影响较大，在水泥浆体里加入消泡剂、减水剂可以显著降低水泥石的孔隙率并使强度有所提高。

Application of Air Diffuser in the Design of FPSO Air-Conditioning System

散流器在FPSO空调系统设计中应用

Impact of Air Diffuser on Performance of Underfloor Air Distribution System

送风末端对地板送风系统性能的影响

Circular perforated air diffuser computerized embroidery punching machine

环形穿孔空气扩散器计算机化锈花穿孔机

Circular perforated air diffuser It had spread across the high valley.

环形穿孔空气扩散器冷空气穿过大峡谷。

Study on Air Diffusion Simulation of Liquid Gases Based on GIS

基于GIS的船运液化气泄漏事故大气扩散模拟研究

Comparison of Results Taken by Three Different Methods Exploring Air Diffusion Law

三种方法探测大气扩散规律结果比较

Effect of Air Diffusion Electrode with Different Structures on the Performance of Button Zinc-Air Battery

空气扩散电极的结构对扣式锌空气电池性能的影响

Experimental and Numerical Studies of Humid Air Diffusion Flames

湿空气扩散火焰的实验和数值研究

Improvement of High Pressure Hot Air Door

Air（初三适用）高压热风门的改进

Development and Application of Electric Air Door in Underground mine

煤矿井下电动风门的研制及应用

Principle and application of double-wing overload prevention automatic control air door

双翼防过载自控风门的原理和应用

Development and Application of Hydraulic Automatic Air Door

液压自动风门的研制与应用

May also act according to requests Canada to suppose the ventilator, the heat gun, the air conditioner forced draft fan, the air-conditioner, the excess load display, the intercom and so on.

还可根据要求加设风扇、热风器、冷风机、空调器、超负荷指示器、对讲机等。

A heat recovery system, utilizing the hot air from the draft fan at the first zone of a draft strand cooler for ignition, heat preservation and sintering is introduced.

本文介绍一个用抽风带冷机第一段的热风进行点火、保温和烧结的余热利用系统。

The Parameter of Air Blower and Draft Fan of Boiler Should be Reasonably Determined

锅炉送、引风机的参数应合理确定

The result indicated that grass and crop rotation improves aperture condition of soil, to improve the condition of much air draft and drought and sand, because of abstract ability of keeping water on the chernozem of bad water erosion and wind erosion.

结果表明：在水蚀和风蚀严重的岗平地黑土上实行草田轮作，有利于改善土壤的孔隙状况，从而改善岗平地黑土的通气有余、持水不足、易于干旱和沙化的状况。

The ventilation duct caliber has to the embankment temperature field affects greatly, the caliber is bigger, the air draft convection effect is more obvious, to protects the frozen earth embankment to be more advantageous;

通风管管径对路基温度场有较大影响，管径越大，空气通风对流效果越明显，对保护冻土路基越有利；

No local influence of sun shine, or air draft, and no any vibrations.

机床局部无太阳照射影响，无风吹，周围无任何振动。