“Qingkou hydro-junction”的概念、定义、翻译、参考文献-科学参考

单词	Qingkou hydro-junction
释义	Qingkou hydro-junction Encyclopedia 工学[中国古代水利工程]释 Qingkou hydro-junction清口水利枢纽明清时期为保证京杭运河安全穿越黄河、淮河两条大河而修筑的庞大水工建筑群。
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