approximate function中文什么意思

逼近函数

• approximate:    vt. 1.使接近。 2.接近；走近 ...
• function:    n. 1.功能，官能，机能，作用。 ...
• approximate partial derived function:    近似偏导函数

例句与用法

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1. In the finite element method, one of the restrictions on the approximating functions is relaxed .
   在有限单元方法中，放开了定近似函数的限制。
2. When adding an entropy function as regularizing term to the lagrangian function , we obtain a smooth approximate function for m ( x ) , which turns out to be the exponential penalty function
   当将熵函数作为正则项加到拉格朗日函数上，我们得到了逐点逼近于m ( x )的光滑函数。经证明，该函数即为指数罚函数。
3. By constructing approximate functions and using prior estimate and conversion of variable , it is proved that the inverse problem has weak solution for given initial value , boundary value and the oil output
   通过变量和函数变换，作逼近函数和估计等方法，证明了对给定的初边值和石油产量，此反问题存在弱解。
4. Ph linearization method is employed to solve a nonlinear reynolds equation for a steady state and micro - scale flow field , and the approximate function expressions of gas dynamic pressure and velocity in the spiral groove are obtained
   摘要应用ph线性化方法、迭代法，近似求解了螺旋槽内稳态微尺度流动场的非线性雷诺方程，求得了气体动压和速度分布的解析解。
5. 2 . for the problem with size , stress and displacement constraints , the stress constraint is transformed into movable lower bounds of sizes , the displacement constraint is transformed into an approximate function which explicitly includes design variables by using mohr integral theory . a mathematical programming model of the optimization problem is set up . the dual programming of the model is approached into a quadratic programming model
   2 .对于尺寸、应力和位移约束的问题，将应力约束化为动态下限，用单位虚荷载方法将位移约束近似显式化，构造优化问题的数学规划模型，将其对偶规划处理为二次规划问题，采用lemke算法进行求解，得到满足尺寸、应力和位移约束条件的截面最优解。