旋转运动

Due to the moving base existence of the minehunting and the frame structure characteristic of the sonar array,a new modeling thought in which the boat body coordinates is regarded as moving coordinates and the whirligig equation of sonar array compared with the self coordinates is founded on the basis of the Eulers theorem and the coordinate transform is introduced. The dynamic equations of minehunting sonar array with the state matrix form are founded by settling the dynamic models with the vector form. So it offers theory foundation for analyzing the dynamic characteristic and designing robust control.

由于猎雷艇作为动基座的存在和声纳基阵的框架结构特点，提出了以艇体坐标系为运动坐标系，运用变形的欧拉定理和坐标变换建立声纳基阵相对自身坐标系的旋转运动方程的建模思想；将所建立的矢量形式的动力学模型展开整理，获得了状态矩阵形式的猎雷声纳基阵动力学方程，为系统动力学模型的实用化奠定了基础。

The piston is attached to the top of a connecting rod by a pin,called a piston pin or wrist pin.the bottom of the connecting rod is attached to the crankshaft.the connecting rod transmits the up-and-down motion of the piston to the crankshaft,which changes it into rotary motion.the connecting rod is mounted on the crankshaft with large bearings called rod bearings.

这个活塞被一个叫活塞销或轴颈销的销子连接在连杆的上部。连杆的底部被连接在曲轴上。连杆把活塞的上下运动传递给曲轴转变成旋转运动。连杆通过一个大的叫做杆轴承的轴承（其实就是滑动轴承，分成两个半圆轴瓦）安装在曲轴上。

Results: The scaphoid and lunate primarily flexed or extended in all directions of wrist motion, and their rotation aried linearly with the direction of wrist motion (R2 = 0.90 and 0.82, respectiely).

结果：舟状骨和月骨在腕关节各个方向上原始的屈曲和背伸及旋转运动与腕关节运动呈线性关系（分别为R2 = 0.90 和0.82）。

Rectilinearly not rotationally.

直线运动，不作旋转运动。

The sectoring gear is a device for converting the rotary motion of the steering wheel into straight-line motion.

四，转向系统 Steering Gear 转向器的作用是把方向盘的旋转运动变为连杆机构的直线运动。

The dart thrower's path defined the transition between flexion and extension rotation of the scaphoid and lunate, and it identified wrist positions at which scaphoid and lunate motion approached zero.

投射过程中的轨迹决定了舟状骨和月骨屈伸和旋转运动，也说明了舟状骨和月骨运动为零的时候腕关节的位置。

The drill pipe transmits rotation, vertical movement and drilling fluid to the bit.

钻杆将旋转运动、垂直运动和钻井流体传递到钻头。

M were applied to produce six kinds of pure moment of force and to create six kinds of movement of the lumbar spine in flexion, extension, left and right lateral bendings as well as left and right axial rotations.

在双侧小关节分级切除状态下，后路螺纹椎间融合器均能显著降低L4-L5节段的前屈、左右侧弯运动范围，但后伸、左右轴向旋转运动只能恢复到完整状态水平。

The linear motion of the wire rope is rurned into the rotational movement of the puley by the sensor mountedin ffont of the drum,and the linear displacement of the wire rope is turned into pulses by the optical coupler,then thd measurment in conideration of the complexity of running tubings.

智能计量仪主要由传感器、有效计量鉴别器、分析计算系统和电源四部分组成。通过安装在滚筒前的传感器将钢丝绳的直线运动转化为摩擦轮的旋转运动，以光电转换装置将钢丝绳的线位移量转换为长度脉冲信号输送到单片机显示输出。

The gap between piston and cylinder wall of an internal combustion engine is small, however it may induce the piston secondary motion periodically and generate unwanted sound and vibration.

由于活塞缸套之间存在间隙，活塞在缸套内会产生横向及绕活塞销旋转运动，称之为活塞二阶运动。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失