“二级单元”的概念、定义、翻译、参考文献-科学参考

单词	二级单元
释义	二级单元 Mathematics second stage unit二级单元^† secondary sampling unit = secondary unit二级单元^†
随便看	Dongguang Xian Dongguan model Dongguan Museum Dongguan palace Dongguan Qingzhen Dasi Dongguan Science and Technology Museum Dongguan Shi Dong Guk Yi Sang Guk Jip Donggutuo Donghai Bridge Donghai Dao Donghai Wenquan Donghai Xian Donghaiyu donghekou landslide,qingchuan,sichuan province Donghe opera Donghe Qu Dong Hongyou Dong Hu Donghuachi Tower Donghuang Taiyi Donghua sect Donghua University Donghu Eco-tourism Scenic Area Donghu Hu

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。