“Educated Youth Worked in Countryside and Mountain Areas”的概念、定义、翻译、参考文献-科学参考

单词	Educated Youth Worked in Countryside and Mountain Areas
释义	Educated Youth Worked in Countryside and Mountain Areas Encyclopedia 历史学重要事件释 Educated Youth Worked in Countryside and Mountain Areas知识青年上山下乡 20世纪50年代中期至80年代初，中国知识青年响应国家号召到农村和边疆地区落户参加劳动的运动。
随便看	sigma-discrete family sigma electron sigma field sigma-field sigma field of events sigma-field of events sigma-field of sets sigma field prior to tau sigma-field prior to tau sigma-field prior to τ sigma-field strictly prior to τ sigma-finite sigma finite measure sigma-finite measure sigma-finite measure space sigma formyl complex sigma-formyl complex sigma-function sigma-group Sigma hypernucleus sigma hypernucleus Sigma hyperon sigma hyperon sigma-ideal Sigma index method

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。