“一级单元”的概念、定义、翻译、参考文献-科学参考

单词	一级单元
释义	一级单元 Mathematics primary sampling unit一级单元^† primary unit一级单元^†
随便看	semi-natural ecosystem semi-natural landscape seminatural vegetation semi-nearness space semi-nested PCR seminiferous scale seminiferous tubule semi-non-Euclidean space seminorm semi-normal seminormality semi normal operator semi-normal operator semi-normal ring semi-normal variety seminormed space seminose semiochemicals semiologie cinématographique semi on-line scheduling semi-on/off-line composite semiopaque semi-open interval semi open semi closed interval semi-open semi-closed interval

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。