转动装置

The system adopted active tracking,namely calculate the input angle of the tracking device in advance,the angle is correspondent to the sun position some moment.Photoelectric sensors react the sunlight that putting on different position of the platform, feedback electrical signal.Then single-chip applys the subprogram and sends out pulse to step motors according to the signals,can control the rotate angle and direction of the step motor. The mechanism has realized the automatic track to the sun, so that the trackers top flat board can be always vertical to the sunlight and arrive the furthest receiving energy.

系统采用主动式跟踪，即预先计算好对应于某时刻太阳位置的跟踪机构的输入角度，通过跟踪器上平台不同位置上摆放的光电传感器感受该太阳位置的光照，反馈回电信号，单片机根据该信号调用子程序发出脉冲对步进电动机的转动角度和方向进行控制，实现了机构对太阳的自动跟踪，使跟踪装置的上平台始终处于垂直于光照方向，达到了能量最大限度的接收。

Correlation between spin angular momentum s and background angular momentums of planets;2. In the paper the principle of optical rotation due to the transfer of spin angular momentum from light to particles was discussed by analyzing the interaction between the beam of light and birefringent crystal particles, and then an optical tweezers was formed on nanometer optical tweezers system with a linearly polarized light beam (He-Ne laser 633 nm, 10 mW).

从理论上分析了偏振光束与双折射晶体粒子的相互作用过程，讨论了由于光束自旋角动量向晶体粒子的传递所导致的光致旋转效应的原理，并在纳米光镊装置上利用线偏振He Ne激光器(633 nm，10 mW)形成了光镊光阱，利用1/4波片来改变光镊光束的偏振状态，在不同的椭圆偏振状态下实现了直径约为几微米的CaCO3 晶体微粒的捕获和光致转动。

The entire cycle of events in the machine requires these steps: the speed reducer promotes the revolving of centering axis, there is a cinquefoil shelf connected on the top of the axis, and the roller device is equipped on the shelf and forms a swing pivot.

工作原理Working Principle MTM中速T形磨粉机主机工作过程是通过减速机带动中心轴转动，轴的上端连接着磨辊吊架，架上装有磨辊装置并形成摆动支点。

Based on above process, three parts of cricoid winding machine's structure is defined as that: winding installation, clamping installation and the part of chest. The clamping installation clamp loop and let it turn. Install the wheel which fit the strap and a impulse electric in the the part of chest.

基于前面所提到的工艺动作和路线又作了进一步的确定，也就是说该环型缠绕机结构又可分为绕线装置、夹紧芯模并且带其转动的夹紧装置和安装带轮以及步进电机的箱体三大部分。

The invention contains following apparatus: display main body; base setting a combination groove thereon; a frame for connecting the display main body and base; rotating apparatus setting under the frame and connecting on the combination groove of the frame for making the frame left-and-right rotate relative to the base; an inclination preventing element for prevent the frame up-and-down inclination with the rotatable gemel as center.

本发明包含下述装置：显示器主体；在其上面设置了结合槽的底座；用于连接上述显示器主体和底座的支架；设置在上述支架的下侧，结合在上述支架的结合槽上，使支架能够相对上述底座进行左右转动的旋转装置；用于防止上述支架以旋转铰链为中心上下倾斜的倾斜防止元件。

A pivotable and retractable antenna contains mechanical and electrical components for connecting to, and matching the impedance of, radio frequency circuitry within an electronic device, such as a radiotelephone.

一种可转动及可收缩的天线包括用于在电子装置、如无线电话内与无线电频率电路连接及阻抗匹配的机械及电装置。

There are one spray gun connected to a reciprocator on the base, one rotating locator set below the spray gun and locating with the sprayed barrel bottom, one circulating and purifying water curtain system opposite to the spray gun to purify the sprayed fog, and one PLC controller set on the base to regulate the spraying.

其喷枪与一安装在机座上的往复装置连接，机座上、位于喷枪的下方设有一利用喷涂钢桶之桶底进行定位并驱动喷涂钢桶转动的旋转定位装置，同时在机座之喷枪口朝对的一侧设有水帘循环净化系统，内喷机之喷涂区间的喷雾经过该水帘循环净化系统后排出，所述内喷机的喷涂调节由安装于机座上的PLC控制器控制。

In this system, tubular scaffold can rotate slowly around own major axis. By means of this, three-dimension tissuesor organs can be cultured in vitro. Part IIIHVEC, VSMC and fibroblast were seeded onto inner surface of tubular porous PGA and PHB scaffold precoated with collagen. Sead HVEC,VSMC and fibroblast onto three porous polyglycolic acid and Poly-?

我们还特别设计了旋转培养装置，通过微型马达驱动，减速装置作用使旋转部分绕自身中心水平轴做缓慢转动，从而使置于旋转部件上的管形支架绕其正中长轴作缓慢旋转，其原理与美国 Genzrpe公司的 RCCS（Rotary cell culture system RCCS）系统相仿。

The pseudo-static test which subjects to horizontal load on the A-type autoclaved aerated concrete block wall was adopted. Reinforced concrete beams were set up at the upper and lower ends of the test block, and the four-bar linkage device was provided to ensure that the top of the wall was only in translatory motion, not in rotation at the level force. Hydraulic synchronous loading device was adopted to simulate the vertical load which was produced by the wall of the housing interlayer.

对A类蒸压加气混凝土砌块墙体采用水平荷载作用下的伪静力试验，试件的上下两端设置了钢筋混凝土梁，通过四连杆装置保证墙体顶部在水平力作用下只有平动而无转动，并采用同步液压加载装置模拟房屋层间墙体作用的竖向荷载。

The device can be used as finger root joint of robot simulating hand, it realizes the rotation of many fingers when robot catches object with simulating hand through less motor drive, it can adapt objects with different shapes and sizes and generate different catching force simultaneously; the device has compact structure, it is simple, reliable, attractive, easy to closed and dust-proof, it only needs lower control system requirements.

该装置可以作为机器人拟人手的手指根部关节，以较少的电机驱动器实现机器人拟人手抓取物体时多个手指的转动，自适应于不同形状和尺寸的物体，同时产生不同的抓取力，装置结构紧凑、简单、可靠、美观、易于封闭防尘，仅需较低的控制系统要求。

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