“dark ages cold period”的概念、定义、翻译、参考文献-科学参考

单词	dark ages cold period
释义	dark ages cold period Encyclopedia 理学黑暗时代冷期释 dark ages cold period黑暗时代冷期从公元4世纪末至10世纪前期的寒冷时期，这一阶段欧洲大陆国家更迭频繁、战乱连年不休、人民生活困顿、文化发展艰难，被历史学家称为黑暗时代，英国气候学家Lamb首先指出这一时代气候寒冷，并称为黑暗时代冷期。
随便看	coordinate formula coordinate frame coordinate-free coordinate function coordinate geometry coordinate gradient descent coordinategraph coordinate grid coordinate homeomorphism coordinate hyperplane coordinate hypersurface co-ordinate indexing coordinate line coordinate matching of machining and measurement system coordinate measurement coordinate measurement quantity coordinate measuring instrument coordinate measuring machining coordinate measuring -metrology coordinate measuring technology coordinate method coordinate neighborhood coordinate network coordinate of a point coordinate of a point on earth surface

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。