“Ordovician Period”的概念、定义、翻译、参考文献-科学参考

单词	Ordovician Period
释义	Ordovician Period Encyclopedia 理学古生代释 Ordovician Period奥陶纪古生代第二个纪，约开始于4.85亿年前，结束于4.44亿年前。
随便看	vocal process vocal recitation and written scores of gong and drum music vocal styles of Pihuang operas vocal tract vocal tract area functions Vocal Training vocanic eruption vocation Vocational Ability Development Promotion Act vocational adaptability of military job vocational and technical college vocational and technical teachers education vocational aptitude test Vocational Arts Education vocational basic education year vocational card sort vocational education vocational education and training in rural areas Vocational Education Assistance Act vocational education equity vocational education for ethnic minority vocational education for persons with disabilities vocational education group vocational education in France vocational education in Japan

科学参考收录了854744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。