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

单词	Pan-African Period
释义	Pan-African Period Encyclopedia 理学泛非期释 Pan-African Period泛非期相当于新元古代晚期至早古生代早期（相当于距今6亿～5亿年或距今9.5亿～5亿年）的地质时期。
随便看	density of volumetric hydrogen storage density operator density parameter density peak density perturbation density point density profile density secondary standard device density sensor density-size relation density slicing density structure of lithosphere density structure of the upper mantle density test density theorem density threshold density topology density variable density variation density wave density-wave instabilities density-wave model density wave theory density-wave theory D. Enskog

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。