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古代淮河入海入江工程
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古代淮河入海入江工程
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理学
古代淮河入海入江工程
释
ancient project of Huaihe River into the Sea and the Yangtze River
古代淮河入海入江工程
南宋建炎二年(1128)黄河南徙夺淮、明万历年间洪泽湖大堤逐渐建成后,为减轻汛期淮河洪水对里运河及里下河地区的危害所采取的入海、入江措施。
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commutativity condition
commutativity relation
commutator
commutator algebra
commutator calculus
commutator closed group
commutator factor group
commutator group
commutator ideal
commutator identity
commutatorless motor
commutator operation
commutator product
commutator quotient group
commutator series
commutator subgroup
commute
commuter’s bus and subway discounts
commuting
commuting elements
commuting endomorphisms
commuting extensions
commuting mappings
commuting matrices
commuting operator
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