“north polar sequence”的意思、由来-百科全书

词条	north polar sequence
释义	north polar sequence astronomy group of 96 stars near the north celestial pole, used from about 1900 to 1950 as standards of magnitude and colour by which other stars are measured. First proposed by the American astronomer Edward Charles Pickering (Pickering, Edward Charles), the system has been largely superseded by the UBV system (q.v.).
随便看	Yakima River Yakovlev, Aleksandr Sergeyevich Yakov Mikhaylovich Sverdlov yaksha Yakub Beg Yakubu Gowon Yakup Kadri Karaosmanoğlu Yakushi-ji Yakutsk yakuza Yakö Yala Yale, Caroline Yale, Elihu Yale, Frankie Yale, Linus Yale school Yale University Yalong River Yalow, Rosalyn S. Yalta Yalta Conference Yalu River yam Yama

百科全书收录100133条中英文百科知识，基本涵盖了大多数领域的百科知识，是一部内容开放、自由的电子版百科全书。