航天发射窗 （launch window）：运载火箭发射考虑地面观察、光照条件、姿态测量、返回时间、空间交会等需要，以及于太阳、地球和其他星体的相对位置等地理、气...
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launch window ending 发射窗口后沿
launch window search 发射机会搜索
launch window beginning 发射窗口前沿
Launch pad window 启动台视窗
以上来源于: WordNet
N the limited period during which a spacecraft can be launched on a particular mission 发射窗口
The launch window remains open for one hour and 43 minutes.
发射窗口有一小时43分钟。
Ares I-X has a four-hour launch window on Tuesday - from 8 a.m. to noon EDT (1200 to 1600 GMT) - during which the rocket needs only about 10 minutes of clear skies to get off the ground.
战神1号- X在周二的发射窗口大概为4个小时——东部标准时间早8点至中午12点。在这段时间里，只要有连续10分钟的晴好天气，火箭就可以发射升空。
In addition, an air launch promises a lot more scope to find a good "launch window" to get the spacecraft into orbit.
此外，空基发射可以为寻找“发射窗口”将航天器送入轨道，提供更多的机会。
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