力矩

Principal axes method, was presented to figure out the rotational directions of talus and calcaneus and the angles between them.

采用最大类间方差法与交互式数学形态学方法相结合的手段从活体后足CT序列图像中分割出距骨和跟骨，以移动立方体法重建距下关节复合体的表面并以动画方式显示距骨和跟骨的结构信息，提出力矩主轴法计算距骨和跟骨相对于参考系的旋转方向及它们之间的夹角。

Holding the bow is like a teeterboard supported by thumb as the pivot and the cooperated forcing of forefinger and little finger produces a moment M. The "P-x-M Line Method" shows when playing a down bow, M increases with x and gradually changes its direction and this process is determined by P, the gravity and barycenter of bow. The "P-x-F Plane Method" shows that the most force-saving bowing path should locate in the lower part of this plane. The analyses of "Helmholtz Motion" and "Schelleng Diagram" indicate P and its range is in direct ratio with volume, velocity of bow, the approaching degree of the bow to the bridge and has some relationship with the quality of string and bow.

国内近期出现了用物理模型来研究小提琴运弓问题的尝试本文第一部分首先指出握弓类似于一个以***(F3)为支点的跷跷板，主要以食指(F1)和小指(F2)的施力配合，产生握弓力矩M；随后用"P-x-M直线法"证实：演奏下弓是M随的***而逐渐增大并转换方向的***，此***取决于P、弓的重力和重心；并首创"P-x-F平面法"，在x，F1，F2空间中证实：省力的运弓路径应在该平面中处于较低的位置第二部分通过分析"赫尔姆霍茨运动"和"Schelleng图表"指出：P及其变化范围和音量、弓速、弓与琴码的接近程度成正比，并与琴弦和弓自身的性质有关

This paper introduces the specialties of giant telescope mount control system,analyses the non-linear disturbance which reduces the performance of control system,compares two robust control theory and points out that H-infinity control theory is more suitable for telescope mount control system.

基于H∞控制理论，将非线性摩擦转矩处理为标称系统的输出端乘法摄动，把克服非线性摩擦转矩的影响转化为提高系统对模型摄动的鲁棒性；同时也考虑了系统对风扰力矩的抑制能力。

Comparisons between calculated results and experimental data are presented,the variations of module of the roll toque coefficients with flight parameters are analyzed.

因此在迎风子午面两侧的烧蚀引射率和摩擦力不再对称，这是产生烧蚀滞后滚转力矩的主要原因。

While the pure toque is combined by suspension center torque and balancing weight torque, so the change of pure torque can be achieved by changing the motion rule of suspension center and the size of offset angle.

净扭矩是由悬点载荷造成的扭矩和平衡重产生的平衡力矩两项的合成，改变悬点运动规律和平衡重的偏置角可以引起净扭矩的变化。

At the same time to obtain a large output torque characteristics.

同时获得了大的输出力矩的特点。

The results showed that the rate of follow and meet with the purpose of torque.

结果表明达到了速度跟随和力矩跟随的目的。

Though establishing kinetic differential equation system and solving, the natural frequency, the angle displacement and torsional vibration force moment can be known.

烧结机驱动装置属半悬挂非对称型柔性传动，为利用动力学的观点分析解决设备故障问题，将系统简化为四质量系统力学模型，通过建立运动微分方程组并求解，可得到系统的固有频率、扭振的角位移和扭振力矩。

The responses properties of coupled vibrations for 120° and 180°asynchronous juxtaposition of 200MW turbine-generator set were analyzed. The results show that the responses properties of flexural and torsional vibrations caused by 120° asynchronous juxtaposition are similar to that of 180° asynchronous juxtaposition. When the fault happened, Former two steps inherence frequencies and whirl speed frequency of torsion are excited. And the first step inherence frequencies of flexural vibration are also excited besides whirl speed frequency. Transient electromagnetism moment peak, torsional and torsional moment responses caused by 180° asynchronous juxtaposition are lower than that of 120° asynchronous juxtaposition.

利用该方法，针对某200MW汽轮发电机组的120°和180°两种非同期并列情况，进行了机组弯扭耦合振动响应特性研究，分析表明：汽轮发电机组的120°和180°两种非同期并列情况下的弯振和扭振响应特性基本相似；非同期并列主要激发出工频和前两阶固有频率扭振，弯振除工频主分量外，第一阶固有频率也被激发出来；180°非同期并列时的暂态电磁力矩峰值比120°非同期并列时低，相应的扭振和扭矩响应也小于后者。

This paper analyzes the admissible stress es used to calculate the diamter of axles accord-ing to torsional stress and resultant stress,and some suggestions are given.

对按扭矩估算轴径和按弯扭合成力矩计算转轴轴径公式中的许用应力进行了分析，给出了修正意见。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。