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禁渔期
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禁渔期
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closed fishing season
禁渔期
根据渔业资源休生养息的自然规律和开发利用状况,渔政主管部门制定的禁止部分或全部捕捞作业生产,或禁止某种渔具或捕捞方法的时间段。渔业资源保护的一种制度。
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triangulability
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triangular decomposition of U_q(g)
triangular decomposition of Uq(g)
triangular determinant
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