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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地球和火星都必须在其确定的轨道运行，在这种情况下，发射窗只能每25各月才有机会发射一次。
Earth and Mars have to be at the right positions in their orbit for this method to work, and the launch window only comes around once every 25 months.
遵循前厅西侧墙面竖窗的窗宽及窗框尺度模数延伸出了发射状的框形天花，成为了前厅的主导元素。
The frame shape suspended ceiling designed according to the size of the vertical Windows on the western wall of the antechamber becomes the leading element of the antechamber.
按ZED图布置的东、西、北窗都是低发射率的三层玻璃窗，达到商业化产品的最高标准。
Windows to the east , west and north of a ZED scheme are all triple glazed units with low e coating to the highest specification commercially available. ( x' P' I.
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