Boeing yet again postponed the maiden test flight of its 787 Dreamliner, this time because of structural weakness in the area where the wing attaches to the body of the aeroplane.

波音公司又一次推迟了波音787梦想飞机的首次试飞。这次是因为机翼与机身的连接区域的结构性缺陷。

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For reentry capsules of spacecraft, making up the trajectory in black-out area is a key link of aerodynamic analysis from flight test data.

对于飞船返回舱，黑障区弹道再现是再人飞行试验气动分析工作的重要环节。

youdao

For reentry capsules of spacecraft, making up the trajectory in black-out area is a key link of aerodynamic analysis from flight test data.

对于飞船返回舱，黑障区弹道再现是再人飞行试验气动分析工作的重要环节。

youdao