“勘合贸易”的概念、定义、翻译、参考文献-科学参考

单词	勘合贸易
释义	勘合贸易 Encyclopedia 历史学国际关系史释 Tributary trade勘合贸易中国明朝时期的对外贸易制度。因采用“勘合符”作为贸易许可证而得名。又称贡舶（赐）贸易。
随便看	space cost function space-coupling spacecraft spacecraft ablative thermal protection spacecraft active attitude control system spacecraft assemble plant spacecraft assembly and integration spacecraft astronomy spacecraft attitude control spacecraft attitude control actuator spacecraft attitude control fly wheel spacecraft attitude control system spacecraft attitude determination spacecraft attitude maneuvering spacecraft autonomous control spacecraft autonomous navigation system spacecraft communication, telemetering, command and tracking system spacecraft control system spacecraft design spacecraft entry technique spacecraft formation flight control spacecraft launch spacecraft launching site spacecraft magnetic test spacecraft manufacturing

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。