This paper mostly introduces a method for computing dust separation efficiency of the vortex tube in the engine air particle separator of helicopter.

本文介绍了直升机发动机进气防砂装置核心元件—涡旋管的砂尘分离效率计算方法。

youdao

Replace engine air cleaner element.

更换引擎空气清洁器组件。

youdao

Guarantee the engine air cylinder, spark plug and oil passage are cleaned.

保证发动机气缸，火花塞和油路清洁。

youdao

Inside the car, they should open a window a little for fresh air and turn on the engine for ten or fifteen minutes every hour for heat.

VOA: special.2010.01.05

I mean, you know the wings go, and the air runs, and then the motor on the engine and it's a miracle how it gets up there and that is the way I used to explain the Greeks, because I had no better idea.

我的意思是,你知道机翼的作用,空气的流动,还有引擎上的发动机,飞机能飞起来,是个奇迹,我就是用这种方式来解释希腊历史的,因为我也没有更好的方法了

耶鲁公开课 - 古希腊历史简介课程节选

Aviation analysts say the sharp volcanic particles can damage a jet engine or cause it to shut down in mid air.

VOA: standard.2010.04.15

One is exhaust gas recirculation, which pumps cooled exhaust back into the engine air intake, lowering the combustion temperature and reducing NOx formation.

FORBES: Clearing the Air

The difference between turbocharging and supercharging is simple: a turbocharger boosts engine air pressure by using exhaust gas to power a turbine that pushes more air into the combustion chamber.

FORBES: 2012 Audi A7 Test Drive and Review - High-Tech Meets High Style

It's a four-door hatchback, with a 1.3-liter engine, dual air bags and antilock brakes.

FORBES: Chery Picking