rotation center meaning in Chinese
旋转中心
转动中心
Examples
- Conclusions : with the horizontal alveolar loss , the rotation center moved toward the apex and the capacity of periodontal support decreased significantly
结论：随着牙周支持组织高度的逐渐降低，牙的旋转中心向根尖移动，牙周支持组织对牙的支持能力明显减弱。 - In succession , we should test whether the rotation center of the tri - eccentric butterfly vavle was right , brought forward a method to test the seal fit interference , designed the program about the seal fit interference and gave the corresponding results which the program was run
对于三偏心蝶阀回转中心的选择是否合适，本文提出了一个检查密封副干涉的方法，设计了相关的程序并进行了验证，给出了程序运行的部分结果。 - The paper analyzed the struture of the tri - eccentric butterfly vavle at length , defined the tri - eccentric butterfly valve , educed the geometry function and its characteristic about the section of the butterfly disc . the results indicate : the parallel contour line across butterfly disc thickness is normal ellipse , thereby eslablished function relations between its geometry parameters ( long axis and short axis ) of three primary sections of the butterfly disc and the tri - eccentricity ; in order to avoid interference between the butterfly disc and the valve seat as well as the valve body , combining the torque , we obtained the feasible range about the rotation center of the tri - eccentric butterfly vavle
本文主要分析了三偏心蝶阀的结构，给出了三偏心的定义，推导出了蝶板截面的几何方程及其性质，结果表明，沿蝶板厚度的平行截面轮廓线为标准的椭圆形，进而推导出了蝶板几个主要截面的几何参数(长轴、短轴)与三个偏心之间的函数关系；考虑到蝶板启闭过程中避免与阀体及阀座发生干涉，结合蝶板的启闭扭矩，确立了三偏心蝶阀回转中心的适宜区域。 - Because it is impossible to adjust the air bearing absolutely balance , the difference between mass center and rotation center must lead to a notable gravity disturbance torque . in the process of identification , modeling and identification of gravity disturbance torque is considered , and an extended kalman filter is educed for identifying air bearing inertia matrix and gravity disturbance torque , and then the algorithm is validated
由于气浮台平衡调试方法和手段的限制,实验过程中气浮台质心与转动中心有一定的位置偏差,必将导致较大的重力干扰力矩,在辨识算法的推导过程中,重点考虑了重力干扰力矩的建模和参数辨识问题,推导了气浮台的转动惯量和重力干扰力矩辨识的扩展卡尔曼滤波算法,并对算法进行了数学仿真和全物理仿真验证。 - The air bearing is the most important part of an attitude control system simulator for simulating a satellite moving in the weightless circumstance . performance of a satellite attitude simulation system based on air bearing is decided by the inertia matrix and gravity disturbance torque arising from a difference between mass center and rotation center , and air bearing can be used to simulate the algorithm of on - line mass - property parameters identification on the ground . so the problem of mass - property and gravity disturbance torque identification for satellite and air bearing is studied in this thesis
气浮台能够模拟卫星在轨失重条件下的姿态运动,是卫星姿态控制系统物理仿真的核心部件,其转动惯量和质心偏移引起的重力干扰力矩等决定了基于气浮台的卫星姿态物理仿真系统的性能,并且利用气浮台可以实现卫星质量特性在线辨识算法的地面物理仿真验证,因此本文对卫星和气浮台的质量特性及干扰力矩在线辨识问题进行深入研究。