Head First

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Head First

机译：头先

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Manned, powered, controlled, heavier-than-air flight has been going on for 111 years, so you would expect that aircraft would wind up in strange positions. The nose-down crash is a case in point. The first image on this page records the deadly crash, on takeoff, of a USAAF B-24 Liberator on April 12, 1945, at San Giovanni Field in Italy. It was part of the 740th Bomb Squadron. Six of the 10 crew members died; the bomber ended up perched on its nose. The image above right shows a similar orientation. In 1915, a World War I French pilot made an emergency landing near Brussels, plunging head first into a tall tree. (Note the men climbing to help.) The third image, also from World War I, captures a trio of German soldiers inspecting an upended German biplane in an open field. How it came to be in that position is not recorded.

机译：有人驾驶，有动力，受控，重于空中的飞行已经进行了111年，因此您可以预期飞机会在奇怪的位置发散。机头向下坠毁就是一个很好的例子。本页的第一幅图像记录了1945年4月12日美国空军B-24解放者在意大利圣乔瓦尼球场发生的致命坠毁。它是第740炸弹中队的一部分。 10名机组人员中有6名死亡；轰炸机最终栖息在鼻子上。右上方的图像显示了类似的方向。 1915年，第一次世界大战的法国飞行员在布鲁塞尔附近紧急降落，首先将头撞到一棵高大的树上。（请注意那些正在攀爬的人。）第三幅图像也来自第一次世界大战，捕捉了三名德国士兵在空地上检查一架颠倒的德国双翼飞机的情况。没有记录它如何处于该位置。

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《Air Force Magazine》 |2015年第3期|33-33|共1页
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机译：交换精子时交配对的排列：（a）头对头对齐的人，同时获得的精子不能同时获得（注意在阴道囊内获得的精子）；（b）头对头排列的个体同时获得精原细胞；（c）头对头对齐并同时获取精子细胞的个体（注：仍在精子细胞腔内的精子）：（d）头对背对齐并同时交换精子的个体

Head First

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