词汇	bilateral levelling
释义	bilateral levelling 对向水准测定
随便看	Earth Orbit Ejection Earth Orbit Equipment earth orbiter Earth Orbit Escape Device earth-orbiting earth orbiting antenna earth orbiting laboratory Earth Orbiting Recoverable Biological Satellite earth-orbiting recoverable biological satellite earth orbiting satellite Earth Orbiting Satellite earth orbiting satellite antenna Earth Orbiting Space Stations earth-orbiting station Earth Orbit Insertion Monitor earth orbit launch earth orbit mission earth orbit period Earth Orbit Plane Earth Orbit Rendezvous earth-orbit rendezvous earth orbit rendezvouseor earth orientation parameter earth orientation parameter, EOP earth orientation parameters