One point of concentration is where the air tube and bronchus divides.

Analysis of ventilation parameters of flexible air tube and selection of auxiliary ventilation equipment

柔性风筒供风参数及局部通风设备选配分析

The long air tube is provided with electrodes.

长气管中有电极。

Theoretical analysis and experimental research on flow characteristics of air tube

气管道流量特性参数理论分析与实验研究

Criterion of Air Voids Based on Permeability Characteristic of Asphalt Mixture

基于渗水特性的沥青混合料空隙率标准

A Research on Influence Factors of Air Voids of Asphalt Mixture

沥青混合料空隙率影响因素研究

The base has bigger percent air voids and can promptly detain pavement interior water, and can effectively reduce the reflection crack.

这种基层具有较大的空隙率，能及时排走滞留在路面内部的水分，并能有效地减少反射裂缝的发生。

So, the gradation design of asphalt mixture based on the air voids is very important.

因而，基于空隙率的级配设计显得至关重要。

Performance Research of Air-to-water Heat Pump Air-Conditioning System

空气&水热泵空调系统性能研究

The results show that air/ water heat pump residential central air conditioning is feasible in the regions with hot summer and cold winter, such as in Hengyang city, Hunan.

结果表明，在具有典型夏热冬冷气候特点的湖南衡阳地区，住宅建筑空调采用空气/水热泵型户式中央空调系统是可行的。

A model of a gas engine driven air to water heat pump based on the measured data of the gas engine and compressor was established.

以某发动机和压缩机的实测数据为依据，对一燃气机驱动空气-水热泵机组建立了模型。

Analysing the Feasibility of Air/ Water Heat Pump Residential Central Air Conditioning

住宅采用空气/水热泵型户式中央空调的可行性分析

Blooey analysis of compressor in air to water heat pump unit

空气源热泵机组压缩机故障分析

Research on Heating Performance of Gas Engine Driven Air to Water Heat Pump

燃气机驱动空气-水热泵机组的供热性能研究

Save energy analysis of air-water heat pump system

空气&水热泵系统的节能分析

The most commonly used tracking method is air waybill tracking.

最常用的追踪方法，就是空运提单追踪。

The first section researches into the legal nature of international air waybill and analyzes the application of electronic air waybills.

第一、第一节探讨了国际航空货运单的法律性质，比较了华沙体制条约、蒙特利尔公约对航空货运单的不同规定，并分析了电子货运单的适用情况。

It thwarts the negotiation of Air Waybill, the development of international trade as well as international payment.

这妨碍了航空货运单的转让、国际贸易的发展、及国际结算的顺利开展。

The air winch Operator shall ensure that the winch wire is moving freely in the derrick ( possibly guided by pulleys) to avoid any damage to the steel structure, especially the fingerboard.

气动卷扬机操笔者要明确承认气动卷扬机钢丝绳以及钻塔不干涉（可以用轮轴导向），以避免毁伤钻塔的钢布局，特别是指梁。

When hoisting any large or heavy equipment off the catwalk always check the Working Load Limit ( WLL) of the air winch, or use the travelling block or crane if available.

当从猫道上提升体积大或较重的设备时，要检查气动绞车的额定工作负荷，或使用游车或吊车（如果有）。

Clearly mark safe working load ( SWL) on the air winch below the rig floor.

标明钻台底下气动绞车的安全工作负荷。