旋转中心

In this acquisition model, the projection center of the camera does not have to coincide with the rotation axis. Thus, the resulting panoramic images are refereed to as multi-center panoramas.

此论文针对利用旋转一维相机拍摄的方式做研究，此方式取得的环场影像能够符合上述的要求，而由於拍摄时相机中心不需要与旋转轴密合，故又称为多中心环场影像。

By taking advantage of a corollary of the Desargues theorem and the corresponging extension of Desarguesian configuration, the concept of stereohomology has been defined in projective geometry and presented based on homogeneous coordinates. Consequently, a series of geometrical transformations, such as central projection, parallel projection, centrosymmetry, translation transformation, reflection, rotation transformation, which can be contained in it or derived from it have also been analytically defined.

利用Desargues定理的一个推论和引申的Desargues图形，给出"空间透射"在射影几何意义下基于齐次坐标表象的解析定义，从而解析定义了可蕴涵其中的中心投影、平行投影、中心对称、平移、反射等几何变换以及可由此衍生出的旋转变换。

The ellipse curre equation of circular image is derived based on the theory of spatial analytic geometry and rotation matrix s representation with unit quaternion then a mathematical model of the distortion error is established which relates the distortion error to the foca length of the used CCD camera,the radius as well as the position and the attitude of the inspected circle directly.

研究三维视觉检测中圆的中心经针孔摄像机成像后存在畸变误差的问题，首先基于空间解析几何理论和旋转矩阵的四元数表示法推导出像平面上投影椭圆的参数方程；然后根据参数方程建立圆中心成像畸变误差的数学模型；最后对影响畸变误差的主要因素进行分析。

Loaded the simulated acetabular cup at an inclination of 35°, 40°, 45°, 50°, 55° to 6 cadaver pelves. Made the pelves tilt around the frontal axis and sagittal axis with 5° each time in a scope of ± 30°. Take standard radiograph of the pelvis accordingly.

按35°，40°，45°，50°，55°外展角分别放置于6具防腐骨盆标本髋臼窝内，使骨盆标本沿冠状轴、矢状轴在±30°的范围内按5°/次分别旋转，保持X射线投照中心点始终与标准骨盆正位片投照中心点一致。

A circle shear device for cutting holes in sheet metal as in claim 2 wherein said means for synchronous movement of said center shafts includes: a a motion linking mechanism including a plurality of gear cogs, cog belts and a jack shaft; and b said motion linking mechanism includes a motor for powered rotation of said center shafts.

一个圈剪切装置切割孔在钣金象索赔2 ，那是说，是指为同步运动的说，中心轴，包括：一）一项议案，连接机制，包括多元化的齿轮cogs ，齿形带和一个千斤顶轴； B ）表示，议案连接机制，包括一个马达驱动旋转的说，中心轴。

The European immigrants made pottery by turning clay on a wheel (called "throwing"), using glaze and a fire kiln. Pottery became so widespread in the 1820s through the 1840s in the north and central areas of Georgia that pottery-making centers were called "jugtowns." Today, Georgia pottery is still made, and the skills, techniques, and materials are passed on to each new generation. Several families in this area continue to "turn and burn," preserving a 200-year-old tradition.

欧洲移民的制陶方法为将陶土放在一个旋转的盘子上捏塑(此步骤称为抛土 throwing)，接著将成品上釉，再放入窑里烧；1820年代至1840年代，陶器开始流传开来，而位於乔治亚北部及中部地区的制陶中心则被称为「瓮镇」；一直到了现在，乔治亚陶器仍持续地生产，而制陶技术、技艺及材料则代代相传，位於此区的好几户家庭仍继续「旋转及燃陶」，努力保存这个已经有200年历史的传统。

The European immigrants made pottery by turning clay on a wheel (called "throwing"), using glaze and a fire kiln. Pottery became so widespread in the 1820s through the 1840s in the north and central areas of Georgia that pottery-making centers were called "jugtowns." Today, Georgia pottery is still made, and the skills, techniques, and materials are passed on to each new generation. Several families in this area continue to "turn and burn," preserving a 200-year-old tradition.

欧洲移民的制陶方法为将陶土放在一个旋转的盘子上捏塑(此步骤称为拋土 throwing)，接着将成品上釉，再放入窑里烧；1820年代至1840年代，陶器开始流传开来，而位于乔治亚北部及中部地区的制陶中心则被称为「瓮镇」；一直到了现在，乔治亚陶器仍持续地生产，而制陶技术、技艺及材料则代代相传，位于此区的好几户家庭仍继续「旋转及燃陶」，努力保存这个已经有200年历史的常规。

Behind the screen is spinning staircases, staircase installed in the horizontal center of the visual center of a room.

屏风背后是旋转楼梯，楼梯设置在平面的中心，成为居室的视觉中心。

In addition, the apparatus includes a motor for rotating the shaft to move the dressing stone held by the fixture along an arc centered on the longitudinal axis of the shaft into engagement with the cutting surfaces of the saw when the saw is rotating thereby to remove deposits from the cutting surfaces of the saw.

另外，该设备包括一个马达（18），在锯旋转时，该马达（18）使轴（14）旋转，并沿着一圆弧将由固定器（16）支撑的清理石移动到与锯的切割面接触的位置，上述圆弧以轴（14）的纵向轴线为中心，这样去除在锯切割面上的沉积物。

Lenses are optical elements with 2 refractive surfaces. These can be centered sphericalally, rotationally

这些透镜是有中心的，如球面的或旋转对称的，而不是非旋转对称的。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。