日地距离=5000000÷0.018°×0.53°≈147222222(千米) 其中5000000千米为地球在远日点时要比它在近日点时远离太阳大约500万公里,0.018°为远日点时天上的太阳要比它在近日点时小了3.3%,约0.018°,0. ...
|Archiver|手机版|小黑屋|电影迷的家
GMT+8, 2025-8-2 02:31 , Processed in 4.428478 second(s), 33 queries .
Powered by Discuz! X3.2
© 2001-2013 Comsenz Inc.