这一人群的平均家庭收入由$53，700下降为$44，900（按2006年美元汇率计算）。

The average household income for this group has actually declined—from $53,700 (in 2006 dollars) to $44,900.

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计算各基因型的平均离差度，在各类群内按确定的比率，选取平均离差度大的材料构建资源核心库。

The mean of deflection for each genotype was calculated. The core collection was constructed by the core entries sampled from each set, with the larger mean of deflection.

youdao

计算各基因型的平均离差度，在各类群内按确定的比率，选取平均离差度大的材料构建资源核心库。

The mean of deflection for each genotype was calculated. The core collection was constructed by the core entries sampled from each set, with the larger mean of deflection.

youdao