“Upper Cretaceous”的概念、定义、翻译、参考文献-科学参考

单词	Upper Cretaceous
释义	Upper Cretaceous [`ǝp·ǝr kri`tā·shǝs] ^GEOLOGY The late epoch of the Cretaceous period of geologic time, beginning about 90 million years ago.
随便看	bubble chamber bubble chart bubble high bubble horizon bubble memory bubble mold cooling bubble point bubble-point reservoir bubble pulse bubble raft bubble sextant bubble sort bubble test bubble tower bubble train bubble tray bubble-tray column bubble tube bubble wall fragment bubo bubonic plague bubulum oil bucaramangite buccal cavity buccal gland

科学参考收录了103327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。