角位

Another new spatial 3-RPS parallel pyramid manipulator mechanism is studied. The principal screws of this mechanism under three different configurations are identified by means of the conic section and the quadric degenerating theory, respectively. The planar conics representing the relations between the pitches of the output twists and the three linear inputs are described, and the three-dimensional distribution of the axes of all the twists with the same pitch is illustrated under each of the configurations.

研究了另一种新的空间三自由度3-RPS并联角台机构，分别用二次曲线和二次曲面分解法识别该机构在三种位形下的主螺旋，绘制了其在每种位形下的输出运动螺旋的节距与输入之间的平面图以及具有相同节距的所有运动螺旋轴线在每种位形下的空间分布的立体图。

Baron Cuvier, a 19th-century zoologist, thought the unicorn not only mythical, but impossible, for its single central horn would have to grow out of a suture in the skull.

巴伦居维叶，一位十九世纪的动物学家，认为独角兽不仅是杜撰的，而且是不可能的，因为它的独角会从头颅的伤口处继续胜仗。

Many writers, however, state that Commodus was really begotten in adultery, since it is generally known that Faustina, while at Caieta, used to choose out lovers from among the sailors and gladiators.121 When Marcus Antoninus was told about this, that he might divorce, if not kill her, he is reported to have said "If we send our wife away, we must also return her dowry".

这个故事看起来是真的，理由是，一位如此高尚的王子的儿子，竟然有着比任何角斗士、演员和竞技场的奴隶更糟糕的心性，他的生活充斥着渣滓、羞辱和罪行。然而，许多作家认为康茂德是通奸所生，源于人们知道福斯蒂娜在凯厄塔，常在角斗士和士兵中选择情人（121）。

There was 100% correlation between the position of the mandibular angle in the preoperative standing lateral radiograph and the intraoperative supine lateral radiograph, compared with 65% with the hyoid bone.

术前站立位颈椎侧位X线片与术中的仰卧位颈椎侧位X线平片之间下颌角位置的关联性为100%，相对应的是舌骨为65%。

Diagnosis, degree of preoperative lordosis in the neutral position, and degree of preoperative sagittal alignment in flexion and extension were studied as risk factors for postoperative kyphosis.

诊断，术前中立位前凸角度和屈曲、伸展位矢状位序列成角被研究作为术后后凸畸形的危险因素。

Everyone was required to lake a full-length standing X-ray film of the lower extremity. The hip-knee-ankle angle, femorotibial angle and tibial plateau-tibial shaft angle were measured on their anteroposterior radiographs. while the posterior slope of tibial plateau was measured on their lateral radiographs based on three reference lines: anterior tibial cortex tangent line, tibial proximal anatomical ink acid posterior tibial cortex tangent line.

受试者拍摄下肢站立位全长X线片，并按要求测量髋－膝－踝角、胫股角和胫骨平台内翻角，再分别用胫骨中上段前侧骨皮质切线、胫骨中上段轴线和胫骨中上段后侧骨皮质切线作为参考线测量胫骨平台后倾角。

They are characterize by irregular and subangular with sandy filling or no filling,and some of them are jointable.

经研究，金顶矿区存在两种成因的角砾岩：构造-膏溶角砾岩和底辟-侵位角砾岩。

Some spore-pollen assemblages of late Trias and the youngest zircon of 225Ma were also obtained in this type.Deriveration of the ore is from the upper crust according to the features of trace elements,zircorn U-Pb age and initial value of ~(87)Sr/~(86)Sr.It has not any charateristics of the mantle.

底辟-侵位角砾岩是本次工作新发现的，它在空间上与构造-膏溶角砾岩密切伴生，剖面上呈脉状或火焰状分布，局部呈脉状穿刺于围岩中，其胶结物中含有晚三叠世的孢粉组合，最年青锆石的年龄为225Ma，角砾岩本身是铅和锌的富矿体。

This thesis also improves the algorithm of iterative calculation of direct kinematics on two aspects. One is to solve the "floating" problem, which is the change of the leg lengthes when nuts of ballscrews rotate around their own axises.

通过对几类关键受限变量——杆长、关节摆角、倾倒角和旋转角进行相关运动学计算，实现对它们的限位约束；同时，针对因滚珠丝杠螺母副引起的杆长随角度变化而&浮动&的特殊问题，对正向运动学迭代算法进行改进，加快了收敛的速度； 3。

In aspect of investigation on the binary phase splitting grating, Dammann grating, rectangle grating and also coordinate-phase modulate grating have been studied respectively. Detail analysis shows that the grating phase angle can inflect greater than coordinate to the splitting efficiency and equality rate.

在对二元位相型光学分束光栅的研究方面，在本论文对Dammann光栅、矩形孔径光栅以及坐标位相调制型光栅分别进行了研究，通过对光栅设计参数的变化对分束效率、分束均匀度的影响的分析可以发现光栅位相角对分束效率及分束均匀度的影响要比突变点坐标的影响大得多。

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。