“first occurrence”的概念、定义、翻译、参考文献-科学参考

单词	first occurrence
释义	first occurrence Encyclopedia 理学生物地层带释 first occurrence低位产出点在某一个地质剖面中，某一化石分类单元在该剖面上出现的最低层位。
随便看	tax sharing reform tax-sharing system tax sparing credit tax supervision tax system tax transport and temporary commutation of taxes Taxus taxus chinensis in Beichuan County taxus chinensis in Dayi County Taxus family Tay Tayama Katai Tay Bridge accident Tayeb Saddiki Tayeb Salih Taygeta Taygete tayisi Taylor Taylor center Taylor circle Taylor coefficient Taylor column Taylor condition Taylor criterion

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。