参数曲线

Applying this rule, we give a kind of definition of discrete Gauss curvature and mean curvature on the discrete parametric curves net.

应用这种加细方法，我们给出了一种针对由离散参数曲线网形成的四边形网格上任意顶点处的离散估计值的定义方法。

By analyzing the differences of three rank parameter curve from zero rank to three ranks, the interpolation successive formula is deduced.

通过对三次参数曲线 0 3阶差分的分析，导出了其插补递推公式，其中只包含加法运算，可以得到很高的插补速度。

The thesis discusses two respects of contents: One is deformation of combination of parametric curve.

本文论述了二个方面的内容：一是组合参数曲线的变形。

The other is smoothing of combination of parametric curve.

二是组合参数曲线的磨光。

This paper proposes two different interpolation algorithms for parametric curve. These algorithms are of great value to improve the accuracy and machining speed of numerical control system.

本文介绍了参数曲线的两种不同的实时插补算法，它们在提高数控系统的速度和精度方面具有很好的效果。

To improve the acceleration-deceleration capabilities of the parametric curve interpolator ,an adaptive acceleration-deceleration control method is presented.

CNC系统中参数曲线插补广泛地应用于复杂轨迹的生成。

To improve the acceleration-deceleration capabilities of the parametric curve interpolator,an adaptive acceleration-deceleration control method is presented.

为了弥补参数曲线插补时加减速能力的不足，提出自适应的加减速控制方法。

Accordingly, the technology of parametric curve real-time interpolation gradually turned into the attractive field of numerical control researches.

与之相适应，参数曲线实时插补技术也逐渐成为近年来数控插补技术研究的一个热点。

According to the feature of case design method, first characteristic parametric curve laws about case is studied, and by classifying parametric curves the solving accuracy is improved.

按实例化设计方法的特点，首先研究了实例特征参数曲线规律，并将其分类组织提高实例的搜索速度和问题的求解精度。

A realtime parametric curve interpolation algorithm is proposed in this paper, which can automatically adjust feedrate to confine the contour error within a given tolerance.

本文给出了一种能够自动调整进给速度，将轮廓误差限定在允许范围之内的参数曲线的实时插补方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。