parametric equation

It proves that the analytical equation is equivalent to the parametric equation under certain condition.

证明了在一定条件下解析方程与参数方程两种形式的等价性.

The theoretical base of the fluid FEM program is the discreteness of Navier-Stokes equation. The iso-parametric element with four nodes and the iso-parametric element with eight nodes are used in the FEM program.

该流体有限元程序的理论基础是纳维-斯托克斯方程的有限元法离散，有限元的网格采用的是四结点四边形等参单元和八结点四边形等参单元。

In this paper, parametric variation method is used in kinematic equation of series excitation direct current motor with different turning velocities.

本文用参数变异法给出串激直流电动机在不同转速情况下的运动方程的解析解，以拓宽人们分析这类问题的思路。

By the solution of the model, a calculating formula of the local dihedral angel of intersecting line and a parametric equation of contacting line are given.

通过对此数学模型的求解，导出了相交双管相贯线上各点局部二面角的计算公式，给出了相交双管装配接触线的参数方程，并解释了其数学本质。

Based on the analysis of the working principle of arc-cycloidal gear pump and the motion relationships parametric equation of a kind of cycloidal curve ot internal tooth was put forward, the trouble of processing and mapping when the rear damaged was solved.

对圆弧-摆线齿廓转子泵工作原理及运动关系进行分析的基础上.提出一种内转子摆线齿廓曲线的参数方程，解决了内转子加工以及损坏后难于测绘的难题。