The smart rotor technology is the present hotspot in the helicopter world.

智能旋翼技术是目前直升机界的研究热点。

youdao

The Mi-26 is the largest in the world serial Soviet transport helicopter.

米-26 是世界上最大的前苏联系列运输直升机。

youdao

It is the first mass production helicopter in the world that was equipped with two turboprop engines with the free power turbine.

它是世界上第一种大量生产的装备有双涡轮螺旋桨引擎的直升机。

youdao

This puts it on the tail of Sikorsky's experimental X2, which has set an unofficial world record for a helicopter by flying at just over 460kph.

ECONOMIST: Chop, chop

At that time, he was lowered by helicopter to the roof of the World Trade Center to help clear an area for helicopters to land, Andersen said.

CNN: Marines honor fallen members of armed forces

When not otherwise clambering up the world's tallest sailing ships, the award-winning photographer can be found hanging from a helicopter in a harness traveling 160 kilometers per-hour in hot pursuit of Powerboat World Champion competitors.

CNN: Dangling on the edge: Life of a daredevil photographer