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古代分水工程
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古代分水工程
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古代分水工程
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Ancient Water Distribution Project
古代分水工程
中国古代按照灌溉需要分引天然河道来水或在干渠上向各支渠分水的工程措施。比较典型的有分水鱼嘴、分水平梁、铧嘴、分水天平、分水闸坝以及一些临时工程。
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fishing industry
Fishing in Qilitan
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Fishing Platform of Yanziling in Tonglu
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Fishing Rights along Newfoundland
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