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古代报汛
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古代报汛
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理学
古代报讯
释
transmission of flood message in ancient China
古代报汛
中国古代采用快于水流速度的方法,把汛期所观察到的河流上游涨水情况向下游和朝廷传递,以便加以防御的制度和措施。
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alkylether acylglycerol
alkylferrocene
alkyl fluoride
alkyl fluoride; fluoroalkane
alkyl glycoside
alkyl group
alkyl halide
alkyl halide; haloalkane
alkylidene complex
alkylidene group
alkylidene group; alkylene
alkylidine complex
alkylidyne complex
alkylidynetricobalt nonacarbonyl
alkyl iodide
alkyl iodide; iodoalkane
alkyllithium initiator
alkylolysis
alkylolysis; alkyl cleavage
alkylphenol polyoxyethylene ether,APE
alkyl polyglycoside
alkyl sulfonic ester DNA crosslinking reagent
alkyne
alkyne complex
alkynide
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