曲线曲率 meaning in Chinese
curvature of curve
Examples
- In fact , rational quadratic bezier curve is just a special form of rational quadratic b - spline curve , the condition of quadratic rational b - spline curve is similar to quadratic rational bezier curve
事实上，二次有理b zier曲线是二次有理b样条曲线的特例，二次有理b样条曲线曲率单调的充要条件是否与二次有理b zier曲线相类似 - We have more important significance studying quadratic rational b - spline curve ' s curvature monotony . this paper derive the curvature monotony condition for the quadratic rational b spline curves by using the skew coordinate system that can reduces the calculation process . and the curvature monotony condition is compared to the quadratic rational bezier curves "
本论文通过建立斜坐标系，简化了计算过程，推导出了二次有理b样条曲线曲率单调充要条件，并与二次有理b zier曲线的曲率单调条件相比较，结果表明：二次有理b样条曲线曲率单调的充要条件与二次有理b zier样条曲线相类似，但其条件又有不同。 - It makes sampling data regularized by means of man - machine interactive mode and procedure method , respectively . the driven data of the cutter guide is generated , which is based on sampling data processed . it proposes an intelligent data reduction algorithm which bases on the combination of straightness of curves , equidistance and distance deviation principle
首先采集并分析了内轮廓数据,分别运用程序处理方式和人机交互方式实现采样数据点的规则化处理;根据处理后的测点数据生成磨头驱动数据;并提出了一种基于曲线曲率、等距及距离偏差带的自适应数据压缩方法。 - From 1990 ' s , sapidis and others had some studies on quadratic bezier curve ' s curvature monotony and they get this curve ' s sufficient and necessary condition of curvature monotony , but the condition is some strict . in 1998 , minerur and some researchers brought forward a high degree curve ' s sufficient condition of curvature monotony . in 2000 , wang w . l
从90年代起， sapidis等人对二次b zier曲线的曲率单调性问题进行了研究，得到了曲率单调的充要条件，其条件比较苛刻； 1998年minerur等人提出了一种高次曲线曲率单调的充分条件； 2000年王玉林等人对二次有理b zier曲线曲率单调进行了研究，得到了充要条件。 - In general , the upward amplitude curve " curvature is larger , and it changes quicker . on the contrary , the downward is smaller and slower ; because the flare force contains the square of the wave elevation velocity , it results in an difference between the flare force frequence and the associated moving frequence ; the flare force decreases the downward amplitude of heaving oscillations ; the speed of ship has an ignorant effect on the peak values of three calculated values , but there is an obvious effect on the oscillating frequence ; the wave amplitude has an effect on the ship motion , and there is an linear relation between the oscillating amplitude and the wave amplitude on the whole . by the way , there are some experiences and lessons according to the progress calculation : before the calculation of the ship motion , we should checkout the balance in a calm water firstly , namely , the whole displace of ship and the longitudinal position of the center of gravity must be consistent with the draft in calm water , or else , the calculation may show the " floating " phenomenon ; the mixed language programming has a lot of virtues , but it exists a fatal limitation - the debug of dll
研究表明：在某些频率范围内相关水动力系数基本不随吃水变化，只有超过某一频率后水动力系数的值才会出现差异；在横摇方向，水动力系数并没有随着吃水的变化发生规则变化，而是出现了波动现象；近船首剖面的水动力系数计算表明，水动力系数的波动非常大，并远远偏离了平均位置的水动力系数值，值的变化速率也不尽相同，总的看来，上振幅曲线曲率较大，变化较快，下振幅曲线曲率较小，变化较慢；外飘力和波面运动的速度的平方项有关，导致其振动频率和相应运动方向的频率不同；外飘力使升沉向下运动的幅值减小；船速对三个计算量的峰值影响甚微，但对振动频率有明显影响；波幅对船舶运动的影响是明显的，船舶运动的幅值基本上和波幅成线性关系。