查询词典 directional

The shape of curve could be modified to satisfy the demand simply through the amendment of the first end curvature or the directional angle of the first port tangent vector or the weight factor of a certain curve.

该方法可以通过简单地调整某段曲线的首端曲率或该段曲线的首端切矢量的方向角或该段曲线的权因子对曲线进行调节。

Directional thermal radiation of canopy was studied and the related model was set up.

中文摘要：研究了植被冠层的热辐射方向性并建立了有关模型。

Objective: To investigate the effect of active fraction A in Guizhi Decoction on dual-directional thermoregulation and its mechanism of influencing heat shock protein in hypothalamus.

中文摘要：目的：研究桂枝汤有效部位A在双向调节体温的同时对下丘脑热休克蛋白的影响。

SOTI (Structure-Oriented Topological Index) is a two-directional topological index proposed in this thesis, from which the molecular structure can be induced.

双向SOTI(Structure-oriented Topological Index)拓扑指数是本文提出的一种新的、能够反推结构式的拓扑指数。

A method of the surface combination based on classification or Euler Operation and the computation of the surface boundaries of a surface is offered to finish the geometry mapping of surfaces between half-edge model and the closed_shell branch of manifold surface model. Moreover, the concepts of conformal-shape geometrical mapping and topological mapping are given. The bi-directional conformal-shape topological mapping between half-edge model and the closed_shell branch of manifold surface model is proved.

提出了一种基于等价分类和欧拉操作的面片合成和曲面边界计算方法，完成了半边模型到流形曲面模型closed shell枝的曲面几何映射；给出了保形几何和保形拓扑映射概念，证明了半边模型到流形曲面模型的closed_shell分枝的双向保形拓扑映射。

The present invention relates to a method for heuristically starting up DC brushless servo electric machine, including the following steps of (1) after powerup of an increment type photoelectric encoder, electrifying a stator winding two by two with identical time interval to generate six-directional stator winding resultant magnetic fields;(2) detecting six different angles rotated by the rotor within identical tiny time interval by the photoelectric encoder;(3) selecting most positive value rotation angle from the six different angles, and determining maximum torque corresponding to the stator winding resultant magnetic field, and implementing servo startup using the maximum torque as constant starting torque;(4) after the zero-point signal of the photoelectric encoder occurring, switching to servo operation with normal constant torsion.

本发明直流无刷伺服电机试探启动方法，采用如下步骤：(1)增量式光电编码器上电后对定子绕组采用相同的时间间隔两两通电，顺序产生六个方向的定子绕组合成磁场；(2)由增量式光电编码器检测出转子在相同的微小时间间隔内分别转过的六个不同的角度；(3)从转子六个不同的角度中选出最大正值的转角，确定相应定子绕组合成磁场对应的最大转矩，并以该最大转矩为恒定启动转矩进行伺服启动；(4)当增量式光电编码器零点信号出现后，切换为正常恒转矩伺服运行。

As an alternative to trenching, the horizontal loop field may be laid by mini horizontal directional drilling .

作为挖坑替代，水平循环领域可能规定由小型水平定向钻。

Triangular pyramid with the corners of the use of micro-structure of the pyramid as directional light, you need to be aware of rotation can not cause too much lower luminance.

利用三角金字塔与四角金字塔微结构来做光线的方向性，则需要注意到旋转角度不可过大容易造成辉度降低。

This paper studied deeply on 3D reconstruction and visualization. Based on the detailed analysis of the MC algorithm, which is used for extracting Iso-surface from volume data field, this paper presented a new method of directional smoothing and triangular curved surface reconstruction.

为了在微机上实现较好的三维重建效果与理想的交互显示速度，本文主要研究内容和结论如下：首先，对三维重建与可视化技术进行了深入研究，在对用于从体数据场提取等值面的经典MC算法深入分析的基础上，提出了等值面方向平滑处理与三角B－B曲面重构方法。

energy method, flexural equation, trigonometric series equation, casing string flexural de-form, directional well

因此。文献[3]在此基础上，将套管柱当作既受横向荷载又受轴向力作用的梁来考虑，使套管柱的受力模式

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。