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交替符号矩阵
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交替符号矩阵
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理学
计数组合学
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alternating sign matrix
交替符号矩阵
一个阶交替符号矩阵是指满足如下三个条件的的矩阵:①它的元素只能是0,1或者-1;②每行和每列元素的和只能是1;③如果忽略0,那么1和-1在每行和每列中交替出现。
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refresh of electronic records
refresh rate
refresh testing
refrigerant
refrigerant alternative and phase out
refrigerant charging
refrigerant compressor condensing unit
refrigerant for vehicle air conditioner
refrigeranting cycle
refrigerant pipe
refrigerant reclamation machine
refrigerated and insulated vehicles
refrigerated aquatic products
refrigerated container
refrigerated lorry
refrigerated railway equipment
refrigerated transport
refrigerated transport equipment
refrigerated vehicle
refrigerating cabinets
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refrigeration
refrigeration appliance
refrigeration by adiabatic demagnetization of a paramagnetic salt
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