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A controlled deorbit requires the use of several core systems, including those for communications, power, and avionics. Some of the ISS machinery was not specifically certified to perform in a depressurized environment. (NASA believes that critical systems would remain operable, based on technical analyses, and emphasizes that many of these systems are already used in vacuum.) Another thing to worry about: the ISS losing control over its orientation in space. The spacecraft could start tumbling, flipping the station’s solar arrays away from the sun, taking the primary source of power with it.
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然而，默茨隨後宣布訪問北京時卻強調「尋求戰略夥伴關係」，之後加碼表示將與中國討論「未來合作」。這種面對中國「一手批評、一手合作」的訊號，似乎反映柏林在美國關稅壓力下的困境。