本文针对系统相对于地球参照系机械能守恒时，在相对于地面作匀速直线运动的参照系中机械能是否依然守恒的问题进行了重新论证。
This article expounds again whether the mechanical energy is in the uniform motion in a straight line, as the mechanical energy is conservative when the system is in the frame of earth reference.
用陀螺理论中刚体一般运动的方程对汽车、工程机械、振动磨机等系统中传动系的双万向节进行了运动分析。
The general motion equation of rigid body in gyroscopic theory is used to analyze the motion of double universal joint in the transmission system of engineering mechanism vibration grinder.
通过摄像机-云台系统所采用的视觉坐标系，推导出了摄像机-云台系统转动的角度控制公式，为运动车辆的跟踪提供了理论基础。
The angle control formula of the camera & pan-tilt-device system is educed with its vision coordinates, which provides theory basis for moving vehicle tracking.
通过建立空间电动绳系系统动力学模型，研究了通有电流的导电系绳高速运动切割地球磁力线时系绳的振荡和变形特性。
With its mass and flexibility of an electrodynamic tether system considered, the propulsive motion of the electrodynamic tether system is modeled.
对转台三个框架系统的坐标系进行了定义，对转台框架系统的动力学进行了分析，建立了三轴转台框架运动的运动学和动力学模型。
The coordinate system for three axes frame of simulator is defined, the dynamic analysis of simulator frame system is analyzed, the kinematics and kinetic models have been built.
由绳系卫星系统运动中心概念推导出的每小段系绳张力的平均值，被用于系统振动频率的求解。
By the concept of the centre of motion, an accurate expression for tether tension is derived and used in determining frequencies.
在视觉系统的定位使用中，必须先统一坐标系，将视觉系统中的镜头坐标系及运动坐标系联系在一起，即标定。
In the position usage of machine vision system, it must unify coordinate systems first to connect camera coordinate system with moving coordinate system, which is called calibration.
在视觉系统的定位使用中，必须先统一坐标系，将视觉系统中的镜头坐标系及运动坐标系联系在一起，即标定。
In the position usage of machine vision system, it must unify coordinate systems first to connect camera coordinate system with moving coordinate system, which is called calibration.
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