查询词典 curvature of curve

Depending on the axis being spacelike, timelike or null, there are three types of screw motions, the third case, i.e., cubic screw motion, is most particular because it is not a rotation together with a translation along the null axis, but a rotation together with a translation along a null curve with non-zero curvature.

依据旋转轴的向量类型，三维Minkowski空间中的螺旋运动可分为三类，其中第三类螺旋运动，即三次螺旋运动，是最特殊的。

ROC analysis showed that using inflection point and the second extreme point of curvature as judgment indexes, greater area under curve could be obtained, and the Youden index was 0.54-0.64, which exhibited judgment capacity.

说明LOGISTIC曲线模型的数学特征值与物理治疗效果存在明显的关联，LOGISTIC曲线模型对颈椎病物理治疗的过程特征表达充分。

Scan line is used to detect the boundary of the horizontal rim, least square estimation is applied to compute its orientation, and elastic thread techniques is proposed to approach the curve with very low curvature.

提出了扫描线测量横向边框外沿并利用最小二乘法计算其走向的方法以及用来拟合曲率极小曲线的弹性线技术。

In this paper the curvature decision method to determine the turning points of fatigue crack growth rate curve has been proposed.

本文提出了确定疲劳裂纹扩展速率曲线转折点的数学方法——曲率判定法。

Structure form adopts converse triangle beam double-hole connection welded by general electric trolley wall plate and steel plate, connection shaft, triangle beam bottom is connected with girder by nut and thrust bearing, triangle beam could rotate 360 degrees horizontally, thus realize whole set electric trolley horizontal rotation, largely reduce curve track curvature radius of electric hoist traveling mechanism.

结构形式采取通用电动小车墙板与一个钢板和连接轴组焊的倒三角形吊梁双孔连接，三角吊梁下面通过螺母及推力轴承与一个横梁连接，三角吊梁相对横梁可在水平方向做360度旋转，从而实现电动小车的整体水平方向转动，大大减小了电动葫芦运行机构弧形轨道曲率半径。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。