The equation set has exact solutions and obtained the streamline equation.
该方程组有精确解，得到了流线方程。
Multivariable equation set fitting method is derived on the basis of least square method principle.
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。
To set up the local plasma drug concentration space time equation of the local embedding.
建立局部植入给药的药物浓度时空方程。
And the welding pool vibration equation is set up.
建立了焊接熔池波动方程。
And the welding pool vibration equation is set up.
建立了焊接熔池波动方程。
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