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长江河道采砂管理条例
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长江河道采砂管理条例
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水利政策法规
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Regulations on Administration of Sand Excavation in the Courses of the Yangtze River
《长江河道采砂管理条例》
中国为加强长江河道采砂管理,维护长江河势稳定,保障防洪和通航安全所制定的行政法规。
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ultracentrifugal
ultra-centrifugal sedimentation
ultracentrifugation
ultracentrifuge
ultracharacteristic subgroup
ultrachromatography
ultra-clean and high-purity electronic specific gas
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ultra-clear glass
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ultracompact HⅡ region
ultraconvergence
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ultradeep-field observation
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ultradifferentiable function
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