“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	invariant subalgebra invariant subfield invariant subgroup invariant subgroup series invariant submanifold invariant subsemigroup invariant subset invariant subspace invariant subspace lattice invariant subspace problem invariant subspace theorem invariant surface invariant system invariant tensor invariant test invariant theory invariant torus invariant transformation invariant treatment invasion invasional bottleneck effect Invasion alien species act invasional latent time invasional meltdown hypothesis invasion mechanisms

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。