对一种利用高空风的风速差控制飞行轨迹的新型低能耗临近空间飞行器，进行了力学分析与配平计算。
The mechanical analysis and the trimming were performed for a novel near space aircraft which uses the variation in wind speed at high altitude to control its flight path.
心情是飘浮不定的云，是捉摸不透的风。你永远不知道它要去哪里，你也永远找不到它的轨迹。
The mood is like the unpredictable cloud and the mysterious wind. You can never know where it goes. Nor can you find its trace.
本文分析了1999年各地草地螟主要迁入峰期的天气学背景，并对风场的时空分布及草地螟迁飞轨迹进行了模拟。
We analyzed the weather background during the major immigration period in 1999, and stimulated temporal-spatial dynamics of wind field and migration trajectories of the meadow moth.
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