There are two kinds of curve definitions: implicit curve and parametric curve.
前言： 空间三维曲线有两种数学表达形式：隐式方程曲线及参数方程曲线。
It is proved that the intersecting line of the two curved surface is space curve, and the equation is quartic implicit function with one unknown.
论证了两曲面的交线为空间曲线，其方程为一元四次隐函数关系式；
For NC machining of plane section method, the machining path of tool cutting plane and implicit surface can be found, and the curve of the tool path is drawn by the positive-negative method.
把隐函数的优势应用到数控加工编程中，即对于截面法的数控加工，求出刀具切削平面与隐函数曲面的加工轨迹，再用正负法绘制刀具轨迹曲线。
Three numerical calculating schemes of realizing the curvature motion formula in curve evolving are discussed, including explicit scheme, semi-implicit scheme and median filter scheme.
探讨了三类实现曲线演化的曲率运动方程的数值计算方案：显示方案、半隐式方案和中值滤波方法。
In this paper a method is proposed to fit data point with implicit polynomial 2D curves, to make the distance from the data points to the curve within the relatively smaller range.
本文提出了一种方法，用隐式多项式曲线拟合数据点，使数据点到多项式曲线的距离控制在相对较小的范围内。
Refrigerant's thermal physical characteristics are calculated according to implicit cubic polynomial curve-fitting model.
制冷工质的热物理性质使用隐式三次多项式拟合模型计算。
Refrigerant's thermal physical characteristics are calculated according to implicit cubic polynomial curve-fitting model.
制冷工质的热物理性质使用隐式三次多项式拟合模型计算。
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