“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	spacecraft launch spacecraft launching site spacecraft magnetic test spacecraft manufacturing spacecraft material spacecraft navigation spacecraft nutation spacecraft operation spacecraft orbit control spacecraft project development phases spacecraft ranging spacecraft recovery system spacecraft relative motion spacecraft returning technique spacecraft scale style movement spacecraft systems engineering spacecraft test spacecraft thrust vector control space cueing task space curve space curve of order n spaced antennas spaced array space debris space decompression sickness

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。