法国工程师进行首次直升机飞行

Frenchman Flies The First Helicopter

French bicycle maker Paul Cornu flies his home-made helicopter for 20 seconds.

In 1907, French engineer and bicycle maker Paul Cornu designed and built the first helicopter to successfully fly.

Cornu himself piloted the first flight and ascended to an altitude of 1 foot.

He hovered there for 20 seconds before descending and landing on the 4 bicycle wheels which acted as the helicopter's landing gear.

Later improvements in design led to his record flight to a height of 5 feet.

法国工程师进行首次直升机飞行

法国自行车制造商保罗·科尔尼进行了首次自制直升机的飞行，这架直升机在达到一定高度后停留了20秒。

1907，法国工程师及自行车制造商保罗·科尔尼设计并建造的第一架直升机进行首次成功飞行。

在这次首次飞行中科尔尼自己充当飞行员并且将直升机上升到1英尺的高度。

他在那个高度停留20秒后下降并且通过作为直升机起落架的4个自行车轮子降落。

后来在设计上的改进使他的飞行高度达到了5英尺。

1.lead to 导致

例句:Premature retirement even with a golden handshake can well lead to extensive frustration and waste of scarce human resources.
过早的退休即便有优厚的退休金也会导致挫伤和浪费人力。

2.bicycle 自行车

例句:A bicycle Cape will protect you in wet weather.
自行车雨披可以使你在雨天骑车也不致淋湿。

3.ascend to 提升到

例句:We mush reinforce our confidence no matter how high the mountain is, one can always ascend to its top 。
同时我们要坚定信心，华山再高，顶有过路。

4.helicopter 直升机

例句:Any urgent mission to a hard-to-get-to place is a likely task for a helicopter.
这是一项紧迫任务。任何一项去往难以到达地区的紧急任务都可能用直升机来完成。