英德
有道
百度
谷歌
图片
维基
百科
轨道高度
[航] orbital altitude
[航] orbit altitude
[航] orbit altitude
- 它将搭载欧盟织女（Vega）火箭升空，速度达到16000英里每小时，轨道高度280英里。
The spacecraft will launch on an ESA Vega rocket, reaching speeds of 16,000 miles per hour and 280 miles in altitude. - 越高耗费的燃料越少，而载人飞船能够长时间安全飞行的轨道高度就有上限。
But while higher is better from a fuel conservation perspective, there is an upper limit on how high it is safe to orbit humans for long periods. - 不论这是一个飞弹还是一个没有到达轨道高度的卫星，也不论它是否装配了核弹头，这都说明北韩拥有了洲际导弹的能力。
Regardless of whether the projectile was a missile or satellite that failed to reach orbital altitudes, had it been equipped with a nuclear warhead, it would have been a de facto ICBM.
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中国词汇量第二的英语词典
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