“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	equivalent norms equivalent number of looks，ENL equivalent objects equivalent on shell diagram equivalent on-shell diagram equivalent orbital equivalent particles equivalent pendulum equivalent pendulum model equivalent percolation resistance equivalent permeability tensor of rock mass equivalent perturbation equivalent phase shift technology equivalent point equivalent points equivalent point system equivalent polygons equivalent power equivalent principle equivalent processes equivalent projection equivalent propositions equivalent quadratic forms equivalent rectangular bandwidth equivalent refinement

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。