The machining experiment is made on semi-spherical part by orthogonal test method. The results of test are analyzed by variance analysis.
运用正交试验方法对半球形零件进行切削试验，采用方差分析法分析试验结果。
The results showed that the soil nutrient had semi-variance structure in bamboo forest, and most of them were spherical model.
结果表明，毛竹林土壤养分存在半方差结构，多数为球状模型。
Results showed that the variance curves of the groundwater salt content in the years 1998 and 1999 display a spherical model, while the curves in 1997 and 2000 exhibit a linear model.
结果表明，该地区1998、1999年地下水含盐量变异函数曲线的理论模型符合球状模型；1997年、2000年地下水含盐量变异函数曲线的理论模型符合有基台线性模型。
Results showed that the variance curves of the groundwater salt content in the years 1998 and 1999 display a spherical model, while the curves in 1997 and 2000 exhibit a linear model.
结果表明，该地区1998、1999年地下水含盐量变异函数曲线的理论模型符合球状模型；1997年、2000年地下水含盐量变异函数曲线的理论模型符合有基台线性模型。
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