那是球体的一个参数方程。

That is a parametric equation for the sphere.

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有曲面的参数方程。

I have a parametric equation for my surface.

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并采用单参数方程对实验数据进行了关联。

The experimental data are correlated with a simple parameter equation.

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确定了方程中的参数。

The parameters in the equation are determined.

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该方程参数少，能够较好的拟合试验曲线。

Such function has only three parameters and suits to test results.

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采用三参数模型计算蠕变方程。

Creep equation was calculated using three-parameter model.

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根据最小二乘法的求解原理，建立了一种适用于多变量方程组系数参数的拟合算法。

Multivariable equation set fitting method is derived on the basis of least square method principle.

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根据最小二乘法的求解原理，建立了一种适用于多变量方程组系数参数的拟合算法。

Multivariable equation set fitting method is derived on the basis of least square method principle.

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