Alo on display will be electronic engine control, currently in production to upgrade CH-47 and UH-60 helicopter engine for the U.S. Army and National Guard.

同时展出的还将有发动机控制电子装置，目前正在生产并用于升级美国陆军和国民警卫队的 CH-47 和 UH-60 直升机发动机。

youdao

The 30′s were not less invention-intensive bringing us the jet engine, helicopter, tea bags, sticky tape, ballpoint pen and the first photocopier.

30年代人们也有不少发明，如喷气发动机、直升机、泡茶袋、胶带、圆珠笔和第一台复印机。

youdao

This paper simply analysed basic conditions and velocity range in various weights of helicopter formation flight in single engine operative and performance prediction in specific weight.

本文对直升机单发编队飞行执行某任务的基本条件，不同重量时单发飞行的飞行速度范围，特定重量的性能估算进行了简单的分析。

youdao

Management decided to take a measured approach, selling off smaller defense units such as the Norden electronics business (bought by Westinghouse in 1994) while retaining the engine and helicopter businesses.

FORBES: How The Pentagon's Top Ten Contractors Dealt With The Last Downturn

The witness said he did not hear any irregular engine noise when the helicopter went past and the height and speed of the craft were normal.

BBC: Colin McRae's neighbour describes helicopter crash

But the witness told the court there was no sign of engine problems at the point when he saw the helicopter.

BBC: Wind link to Colin McRae helicopter crash