[数] 共变函数

covariant function的用法和样例：

例句

The first one is chosen using time series method, and the second is obtained from measurements using the autocovariance function of the stationary stochastic process.二是应用平稳随机过程的自协方差函数从双差观测值中提取的正则化矩阵。

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back pressure manometer

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