@SpaceX @Space_Station About twice as much useful mass to orbit as rest of Earth combined
@SpaceX@Space_空间站绕轨道运行的有效质量约为地球其他部分总和的两倍
@SpaceX @Space_Station About twice as much useful mass to orbit as rest of Earth combined
@SpaceX@Space_空间站绕轨道运行的有效质量约为地球其他部分总和的两倍