declination造句
Themagnitudeoftheeffectontherateofchangeofpulsarperioddependsonthedeclinationofthepulsarandthelatitudeoftheobservingstation.Fromtheendof16thcenturytotheendof19thcentury,Manchucharactershadundergoneahi...
Themagnitudeoftheeffectontherateofchangeofpulsarperioddependsonthedeclinationofthepulsarandthelatitudeoftheobservingstation.Fromtheendof16thcenturytotheendof19thcentury,Manchucharactershadundergoneahi...