aircraft flying in echelon 成梯队飞行的飞机
Since 1914, and a seminal paper by a German researcher called Carl Wieselsberger, scientists have known that birds flying in for mation—a V -shape, echelon or otherwise—expend less energy.
1914年，一位名叫卡尔▪维塞尔斯伯格的德国研究员发表了一篇具有重大意义的论文，科学家们从中得知，鸟类在飞行的时候排成 V 字、梯形或倒过来时，会节省体力。
Since 1914, and a seminal paper by a German researcher called Carl Wieselsberger, scientists have known that birds flying in formation—a V-shape, echelon or otherwise—expend less energy.
1914年，一位名叫卡尔▪维塞尔斯伯格的德国研究员发表了一篇具有重大意义的论文，科学家们从中得知，鸟类在飞行的时候排成V字、梯形或倒过来时，会节省体力。
Zhai Zhigang appeared in the "Shenzhou", "Shenzhou VI" flight echelon, with the two "Flying" missed.
翟志刚曾入选“神五”、“神六”飞行梯队，两次与“飞天”失之交臂。
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