“内三关”的概念、定义、翻译、参考文献-科学参考

单词	内三关
释义	内三关 Encyclopedia 历史学民族释 Inner Three Passes内三关中国古关合称，明代以北直隶（今河北、北京）境内沿内长城分布的居庸关、倒马关、紫荆关三关为内三关。
随便看	rare-earth element rare earth element geochemistry rare earth extraction chromatography separation and purification rare earth fluoride rare earth fluoride calcium thermal reduction rare earth fuzzy extraction rare earth hard magnetic materials rare earth helate rare earth hydroxide rare earth intermediate alloy-vacuum distillation rare earth iodide rare earth ion exchange chromatography separation rare earth ion exchange separation rare-earth-iron garnet rare earth laser material rare earth laser materials rare-earth laser materials rare earth liquid-membrane extraction separation and enrichment rare earth magnetic materials rare earth metal rare-earth metal rare-earth metal catalyst rare earth metal ore deposit rare earth metal refining rare earth metals metallurgy

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。