“Tributary trade”的概念、定义、翻译、参考文献-科学参考

单词	Tributary trade
释义	Tributary trade 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。
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