Turkish conqueror, founder of the Ottoman (Osmanli) dynasty and empire. After succeeding his father as leader of the Seljuk Turks in 1288, Osman reigned as sultan, conquering north-west Asia Minor. He assumed the title of emir in 1299.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。