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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。

The shutoff valve with the test cock is to be mounted on the inlet side of the backflow preventer.

带测试旋塞的关闭阀应该安装在防回流阀的进口侧。

Supplied with tapped mounting holes in the backplate and four eye bolts, these suspended magnets can be rigidly mounted with threaded bolts or hung by eye bolts using cable or chain systems.

悬挂式磁板主要应用在带式传送机上，利用背面的四个螺纹固定孔和4个环首螺丝可以牢固的用绳子或者铁索悬挂在传送带上，或者用螺栓固定在机器上。

It combines the established Zenith bagger and new C1 multihead weigher, mounted on the bagger itself with no requirement for a supporting gantry, thereby reducing floor space requirements.

它结合了既定的最高境界，新的C1巴格尔多头秤，安装在巴格尔本身没有要求支持龙门，从而减少了地面空间的要求。

It features two fire-linked laser cannons chin-mounted on the ball-shaped cockpit.

它的两部火力同步激光炮安装在球型驾驶舱的下部。

The analysis is carried out using the, explicit finite element program LS-DYNA3D. The results are compared with data from physical tests using a ballistic pendulum impacting soil-mounted guardrail posts. The results show that the post-soil model is e...

由非线性显示有限元程序LS DYNA3D分析，通过用弹性摆撞击埋在地基里的立柱测试结果进行比较，结果表明，立柱地基模型是有效的、切实可行的，并可应用在护栏模型里。

Very few people have actually seen the police horses, despite all the ballyhoo the mounted police received from the press.

当初炒的火热的骑警队，相信真正看过的民众应该是少之又少。

This is the first time I have seen a mounted band.

这是我第一次看到骑兵乐队。

In addition, the Mi-25 was equipped with the YakB-12,7 machine-gun, mounted in a barbette underneath the front cockpit, as well as UB-32-57 rocket launchers for unguided rockets.

米-25的其它武器还有安装在机头下面可转动的12.7mm机枪塔，以及UB-32 57无控火箭巢。

B Any device such as a shutter, an iris, or a barn-door that is permanently mounted to or intended to be used with a luminaire and is intended to alter the light beam is to be adjusted so the aperture is uniformly reduced in area by 70 percent.

当 光束被调整后，光圈在区域内均减少70%。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。