使转动

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。

Compared with the traditional method, the system avoids manual operation and manual computation to realize automatic measurement process and increase efficiency and precision.

与传统测量转动惯量方法相比，采用该系统可以避免繁琐的人工计算，使测量过程趋于自动化，从而提高测量效率，并提高了测量精度。

Based on the prior art, the optical engine according to the invention has the improvements that, three optical axis steering components are respectively introduced into red, green and blue light illumination systems, and an optical axis lengthening structure is introduced into the green light illumination system, so that optical axes of the red, green and blue light illumination systems, each of which is from an LED resource to the optical axis steering component, are counterclockwise rotated for 90 degrees, parallel with each other, parallel with an optical axis of a projection lens, arranged in a same plane and positioned under the projection lens, luminous faces of three LED luminous chips of the red, green and blue light illumination systems are in a same plane, and the three LED luminous chips can be mounted on a same heat-radiating plate, therefore, the heat-radiating system has a simplified structure, and the optical engine has reduced size.

在背景技术所述的光学引擎的基础上作以下改进，在红、绿、蓝光照明系统中引入三个光轴转向器件和在绿光照明系统中引入光路加长结构，旨使：红、绿、蓝光照明系统各自的从LED光源至光轴转向器件部分的光轴朝逆时针方向转动90°、互相平行、与投影镜头的光轴平行、居同一平面和位于投影镜头的下方，红、绿、蓝光照明系统的三个LED发光芯片的发光面居同一平面，三个LED发光芯片可安装在同一块散热平板上，散热系统的结构简化，所述的光学引擎的尺寸减小。

Secure the battery holder to the camera body by turning the battery holder screw clockwise with a coin .

用硬币顺时针转动电池室使之装回相机。抛个硬币就相等于孜孜以求的解决办法。

Secure the battery holder to the camera body by turning the battery holder screw clockwise with a coin.

用硬币顺时针转动电池室使之装回相机。

This paper analyzes the factors that affect the performance of silicon oil fan clutch and the key configuration.A kind of silicon oil fan clutch has been developed,performance and experimental data of silicon oil fan clutch are summarized through bench testing.The test results show that the optimized clutch can make a response to temperature and has less consumption of power.

硅油风扇离合器不仅可以减少发动机有效功率的损耗，改善发动机的经济性，提高发动机寿命，而且能有效的降低发动机噪声，具有广阔的应用前景[1]。1结构及工作原理硅油风扇离合器是用硅油作介质，利用硅油高粘度的特性来传递转矩，其结构如图1所示，当发动机负荷增加时，水温升高，从散热器吹来的热空气使双金属感温片受热而扭转变形，带动阀销一起转动并通过感温片变形量的大小控制进油阀开度。

When you press on the foot brake, friction band s push hard against the wheel drums and stop the wheels from turning.

当你踩下脚制动时，摩擦片就会紧紧地压在车轮制动鼓上，使车轮停止转动。

A coaxial power shaft (25) is connected to the impeller (15) so as to rotate it in a given direction.

一同轴的动力轴（25）与叶轮（15）相连，以使沿一给定方向使叶轮转动。

Cylinders used to open the master switch, and then clockwise rotating low pressure regulator screw table to compress the main spring and transmission film, pad, and push-rod spring open the trap door.

使用时先打开钢瓶总开关，然后顺时针转动低压表压力调节螺杆，使其压缩主弹簧并传动薄膜、弹簧垫块和顶杆而将活门打开。

The principle that the cylinder drive swing lever to promote scraper plane rotation, so close to the blade surface Dryer (adjusted for normal 1-1.5mm) non-contact dryer, and then to the red balloon gas pressure, air pressure to promote post-marked increase on the blade Pressure, so that the blade surface close to Dryer.

其原理为，气缸推动杠杆摆动带动刮刀架转动，使刮刀靠近烘缸面（一般调为1-1.5mm）不接触烘缸，然后给气囊冲气加压，气囊推动后压标对刀片加压，从而使刮刀紧贴烘缸面。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。