旋转中心

As the machine is tilted off-balance, the center of pressure acts as a fulcrum for the system to rotate around.

由于机器倾斜失去平衡，该中心的压力，作为一个支点，让系统旋转周围。

For Hu invariant moment having no scale invariance, two modified algorithms are proposed: one is based on the normalized central moment coming from the concept of image square and the other is based on constructing a new invariant moment.

主要贡献如下： 1。针对离散情况下Hu不变矩特征仅仅具有平移、旋转不变性，不具有比例不变性的问题，提出了两种改进算法：一种是从图像正方形概念演变而来的归一化中心矩的修正；另一种是重新构造新的不变矩特征。

Based on the depth research on extension array manifold of uniform circular, for some uniform circular arrays which had subarrays with the nature of rotational invariance and had the nature of central symmetry two ESPRIT algo-rithms were presented, the first algorithm reduced one time of SVD, the second algorithm avoided parameter pairs.

在深入研究均匀圆阵扩展阵列流形的基础上，针对某些均匀圆阵的扩展阵列中含有旋转不变性的子阵列组以及中心对称性质，提出了2种基于均匀圆阵的二维ESPRIT算法，第一种算法减少了一次奇异值分解，第二种算法避免了参数配对。

Circular ring connected by spokes to a hub, designed to turn around an axle passed through the center.

轮子由''。'辐'。''条连于轮毂之上的实心圆盘或坚硬的圆环，被设计用以围绕穿过其中心的轴旋转

"Circumvolution:an act of turning, coiling, or folding about a center, a core, or an axis."

转动，旋转：相对一个中心、核心或轴的转动、卷缠或折叠的动作。

This system transfers operation instructions formed from command centre to the operating rocket site by wireless communication , and realizes automatic azimuth and elevation circumvolution and automatic launch of the long range controlled rockets .

该系统将指挥中心形成的作业指令无线传递给作业火箭，实现了远程控制火箭的自动旋转和发射，较好地解决了火箭操作烦琐，参数设计不科学，作业记录不完整，指令传输慢等问题。

This is a rotation of the windmill, by the three major axis and the axis composed of three small windmill, and into a clockwise rotation, the center of the color change cycle.

详细说明：这是一个旋转的风车，由三个大轴和大轴上的三个小风车组成，且成顺时针转动，中心的颜色成周期变化。

The accusers denote in their indictment that, Shenzhen Aowo International Technology Development Co Ltd and Shenzhen Aowo Medical New Technology Co Ltd illegally use patent Circumrotating Coniform Focused Gama-ray Radiation Unit without authorization to produce gama knife systems, Concord Medical Services Holdings Limited and its affiliated enterprises Shenzhen Aohua Medical Device Development Co Ltd and Shenzhen Aohua Medical Device Leasing Co Ltd sell the illegal products, as well as invest 26 gama knife therapy centers.

原告在起诉状中表示，深圳奥沃国际科技发展有限公司和深圳市奥沃医学新技术发展有限公司未经许可，非法使用"旋转锥面聚焦式伽玛射线辐射单元"专利技术生产伽玛刀，泰和诚医疗集团有限公司属下的深圳傲华医疗设备发展有限公司和深圳傲华医疗设备租赁有限公司则销售这些侵权产品，并在各地投资建立了26家伽玛刀治疗中心。

At step 2 a black crosshair with a circle appears in the middle of the picture: this represents the pivot point for the rotation.

在第2步，带圆形的黑色十字线出现在图片的中心：这代表了旋转的枢纽点。

Since installing the first TDL-10 in 1996, Western Cutterhead has installed three more Cincinnati Machine Arrow 750 machining centers, requiring Troyke TDL-10-2 tandem tilting rotary tables.

自从安装第一个10 TDL在1996，西Cutterhead安装更多的3 辛辛那提机器箭750 机器加工中心，要求Troyke TDL 10 2 串行倾斜旋转桌子。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。