numerical example showed that the parametric equation is rational to describe the shape of mooring line.

算例表明，描述锚链线形状的参数方程是合理的。

the geometric meaning for the parametric equation of ellipse is a familiar thing (see example 1).

椭圆的参数方程的几何意义是众所周知的（见例1）。

in the form of function of functions this article derives the parametric equation of cylinder helix the lead of which is of a linear change.

用复合函数的形式，汇出导程呈线性变化的圆柱螺旋线的参考方程。

i believe the readers will have a more concrete understanding of the usage of parametric equation in solving analytic geometry.

相信读者在阅读本文后会对参数方程在解析几何中的应用有更具体的认识。

the authors have derived a parametric equation of the contour curve by the graphic method and through the analysis of its nature on the orthographic axonometric projection of a torus.

本文运用图解法，在对圆环面正轴测投影外形线的曲线性质进行投影分析的基础上，导出了圆环面正轴测投影外形线的参数方程；

and, well, we「ve learned in particular how to find where a line intersects a plane by plugging in the parametric equation into the equation of a plane.

特别的，我们学过,怎样找到直线与平面的交点,通过将参数方程带入平面方程。

an algorithm which can draw any complex surfaces expressed by explicit equation or parametric equation was given.

提出了显式方程和参数方程表示的曲面的一种绘制算法，该算法可以绘制任意复杂的方程曲面。

in this article i choose type 100 dreg thick liquid pump as the instance , using the boundary layer theory designs the parametric equation of the blade type line.

以100型渣浆泵为实例，利用边界层理论设计出了叶片型线的参数方程。

this paper describes the geometric meaning for the parametric equation of hyperbola and parabola, respectively (see examples 2 and 3).

本文将分别对双曲线、抛物线的参数方程阐述几何意义（见例2、例3）。

by using the ellipsoid parametric equation and concave-convex texture, different parameter surface for plant fruit can be got through distortion processing.

该方法使用凹凸纹理处理方式对椭球面参数方程进行变形，模拟各种不同形状植物果实形状；

in this paper, the parametric equation and radiation field formulas for a parabolic torus reflector antenna are given.

本文给出了抛物环面天线的参数方程和辐射场公式。

in this paper, the symmetry of curved lined given by parametric equation and polar coordinates equation is discussed and the sufficient conditions are given.

本文讨论了参数方程和极坐标方程表示的曲线的对称性，给出了判定这两种曲线的对称性的充分条件。

q1 now, we know not only the points q0 and q1, we know actually any point on the line because we have a parametric equation up there telling us, where is the point that」s moving on the line at time t?

现在，我们不仅知道q0和，实际上我们知道直线上左右的点,因为参数方程告诉了我们这一切，告诉了我们时刻t的时候，点在何处？

from commonly used equation of calculating plane figure quadrature, formulas of calculating plane figure quadrature by applying curve parametric equation can be deduced.

从由曲线普通方程求平面图形面积的公式出发推出在各种情形下由曲线参数方程求平面图形面积的公式。

that is a parametric equation for the sphere.

那是球体的一个参数方程。

this paper infers the parametric equation of the quadric b-spline curve, introduces its character, and gives the special method of process when the curve is approximated.

本文推导出计算机绘图中的二次b一样条曲线的参数方程，介绍二次b一样条曲线的性质，并给出在逼近曲线时的特殊处理方法。

we are finding a parametric equation for the sphere using two variables phi and theta which happen to be part of the spherical coordinate system.

我们建立有两个变量φ和θ的球面的参数方程,它们恰好是,球坐标系统的一部分。

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 this kind of crack element, and by introducing parametric equation of ellipse, a new method for estimating stress intensity factor is proposed.

基于这种裂纹单元，作者引入椭圆参数方程，推出一种计算裂纹前缘点应力强度因子的新方法。

i have a parametric equation for my surface.

有曲面的参数方程。