An air mass rises for a number of reasons.

Higher heat transfer rate as air mass flow rate increases.

高等传热利率空气质量流量的增加.

The products of combustion and of industrial processing are contained with a confined air mass.

燃烧和工业过程产物被封闭在局部气团的地区中.

The major controlling influence is the inflow of a cold , dry, air mass.

主要支配的影响是干冷气团之流入.

Recycle your old mobile phone and get up to 750 air miles in exchange.

回收你的旧手机,可以兑换高达750英里航空线.

Now where can I get some air miles again?

现在我还能在哪里得到航空里程 呢 ?

The 13-month-old has now clocked up 16,000 air miles since leaving Malawi.

这个13个月大的小不点从离开马拉维开始,已经飞行长达16,000英里.

The linear rollback method is perhaps the simplest one based directly on air monitoring data.

线性压值法也许是直接根据监测资料所得到的最简单的方法.

A housing includes an air inlet , an air outlet and an airflow path there through.

外壳包括空气入口 、 空气出口和空气气流通路.

Sound cover allowsa ducted cooling air outlet , from side only or from both front and back.

隔音罩引导冷却空气从一侧或两侧及背面排出.

It can provide high-pressured clean air when in need and avoid air output bottleneck.

需高压喷气清洁时更能提供高压清洁气流,避免气流瓶颈输出.

Strong freezing system and air output recycling system at high speed.

强劲的冷冻系统,高转速的风量再循环系统.

It must have hit an air pocket.

一定是遇到了一个气潭.

What kind of sensation do you have when the plane drops air pocket?

当飞机突然下降时你有什么样的感觉?

Mike : Don't worry. We just passed through an air pocket. It happens all the time.

别担心. 我们刚经过一个空中气涡. 这是常有的事.

If the plane drops suddenly, it is probably an air pocket ( air current ).

如果飞机突然下落, 可能是碰到了气阱 ( 气流 ).

Every time a plane hits an air pocket, it always dips a little.

飞机碰上气阱总是要下降一些的.

What was that? The plane dropped suddenly. It must have hit an air pocket.

怎么回事? 飞机突然下跌. 一定是遇到了一个气潭.

We had a bumpy flight because of air pocket.

我们的飞行甚为颠簸,因为遇到气穴.

He survived the earthquake after spending 3 days in an air pocket.

他在气窝里度过了3天，得以从地震中幸存。

Contributors identify the major elements of the industrial air pollution situation.

作者指出了工业大气污染中的主要因素.