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。
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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