“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	system environment Systeme Preparatoire Infra-Rouge Pour Alerte satellite system equivalence system error system estimation system evaluation system evolution system expandability system failure of power system system fault diagnosis system fault tolerance system fault tolerance, SFT system feasibility system feedback system flow diagram system flux system follow-up system for buildings with animals system for buildings with plants system for stockpiling reserves of major commodities system for the review of constitutionality system function system generated electromagnetic pulse system generation system ground

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。