转动

The main component of the celestial globe is a hollow bronze globe, with crisscross grids on the spherical surface, which are used to delineate the exact position of celestial bodies.

整个铜球可以绕一根金属轴转动，转动一周代表一个昼夜，球面与金属轴相交于两点：北天极和南天极。两个极点的指尖，固定在一个南北正立着的大圆环上，大圆环垂直地嵌入水平大圈的两个缺口内，下面四根雕有龙头的立柱支撑着水平大圈，托着整个天体仪。

"Circumvolution:an act of turning, coiling, or folding about a center, a core, or an axis."

转动，旋转：相对一个中心、核心或轴的转动、卷缠或折叠的动作。

Will be an image along the clockwise rotation, you can modify the source code to change the rotation angle.

详细说明：将一幅图像沿顺时针转动，可以修改源程序改变转动的角度。

The measurement method and principle of the temperature dependence of rotational viscosity coefficient of nematic liquid crystal were investigated on a personal computer-based optical system developed by us.

本文设计开发了基于微机的液晶参数测试光学系统，在该系统上研究了液晶的转动粘质系数的测试原理与方法：通过测试液晶盒在偏置电压下相位驰预时间，推导出转动粘质系数的值。

Entirely coidentity between Diaphragm 's geometry center and beam of light's energy center of gravity is impossible while adding Diaphragm every time, so it has a little influence on measurement precision.

国外的只能转动90°角的激光对中仪应用中受到一定的限制，因为有些场合无法实现90°角转动，任意转角激光对中仪数学模型的建立可以解决这个问题。

Based on the principle of compound pendulum ,the measurement method and corresponding equipment for the centroidal deviation and the rotary inertia of rocket projectile were described.

基于复摆原理，阐述了箭弹的质偏和转动惯量的测量方法及装置，推导出了质偏和转动惯量的计算公式。

The system was also installed with the RS-232 USB connecter connected with PC, which could process the more complicated serial data and show their pictures via PC. Meanwhile, the starting and braking processes as well as the stability research during its normal performance could be better analyzed.

系统还设置有与咒计算机通讯的RS-232串行接口，可将连续测量数据通过PC机进行更复杂的数据处理和图形显示，能较好地分析研究机械转动设备的启动、制动过程及对械转动设备在正常运行过程中的平稳性研究。

Week 4 Work and energy principle, conservation law of mechanical energy, moment of force, moment of inertia of rigid body, rotating law of rigid body with fixed axis.

第4周 功能原理、机械能守恒定律；力矩、刚体的转动惯量、刚体定轴转动定律。

The principle of work is: When ambient temperature rises, the pressure of the SF6 gas increases, drives the indicator along the clockwise rotation, but at the same time, the mouth of the bimetal compensation system "the U shape" publicizes, then impels the indicator to the counter clockwise rotation, when two kind of strength be equilibrium, the ambient temperature change cannot made the indicator deflection.

工作原理是：当环境温度上升时，虽然容器内SF6气体的密度未发生变化但其压力增大，带动指针顺时方向转动，而当温度上升时，双金属补偿装置的"U形"口张大，则推动指针向逆时针方向转动，当两种运动引起表针的偏转量相抵销时，无论环境温度如何变化，指针都不会发生偏转。

Otherwise, When ambient temperature falls, the pressure of the SF6 gas decreases, drives the indicator counter the clockwise rotation, but at the same time, the mouth of the bimetal compensation system "the U shape" reduces, then impels the indicator to along the clockwise rotation, when two kind of strength be equilibrium, the ambient tempera

反之，当环境温度下降时，虽然容器内SF6 气体的密度未发生变化但其压力减小，带动指针向逆时方向转动，而当温度下降时，双金属补偿装置的"U 形"口缩小，则推动指针向顺时针方向转动，当两种可运动个起表针的偏转量相抵销时，无论环境温度如何变化，指针都不会发生偏转。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了