你的说法非常精确。这才是严谨的科学态度。谢谢指教。
所有跟贴·加跟贴·新语丝读书论坛http://www.xys.org/cgi-bin/mainpage.pl
送交者: Yush 于 2005-6-29, 14:17:29:
回答: after changing orbit, the operation orbits doesn't have to be elliptical. 由 steven 于 2005-6-29, 04:49:10:
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