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我怎样才能在f sharp中创建一个csv文件并在其中写入以下记录类型？

    type test = { G:array<double>; P:array<double>; GG:array<double>; PP:array<double> } 

    let table = [for x in 0..(Un0.Length - 1) -> 
        let b = Un0.[x] in 
        if b=0.0 then {G=0.0; P=0.0; GG=0.0; PP=0.0}
        else {G=G_0.[x]/b; P=P0.[x]/b; GG=G0.[x]/b; PP=PP0.[x]/b}]