投影

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 loudspeaker device may further include a fourth acoustic driver comprising an axis, arranged along the line so that a projection onto the azimuth plane of the fourth driver axis and the projection of the second driver axis are coincident.

扬声器装置还可以包括具有轴线的第四声学驱动器，沿着所述直线设置所述第四声学驱动器，使得第四驱动器轴线在方位平面的投影和第二驱动器轴线的投影重合。

The axonometric projection has been applied extensively in engineering because of its three-dimensional effect and better measurement and because of its drawing unsophisticatedly.

从图形直观性和作图简便程度出发，阐述了在实际工程中怎样选择合适的轴测投影图表达实体，以及不同的专业领域选用不同种类的轴测投影图

This paper discussed the algorithm of horizontal obligue axonometric projection of shade and shadow on spheric surfaces in light ray and projection directions.

对于任意方向的光线，作图很难完成。本文给出了任定投影方向，任定光线方向，圆球及其阴影的水平斜轴测投影的算法。

This paper presents the optical illusion of the ambiguity axonometric projection and the deformation of the stereogram, and use many courses knowledge to analyse the cause then get some important conclusions.

针对观看体视投影图出现体视合像变形、非单义性轴测投影图的视错觉，运用多学科的知识来分析原因，探讨消除对策，得到了一些重要的结论。

Using axonometric projection method ,the computer si mulation of the di mensional electrostaticfieldis realized through the planar projection transformation of three-di mensional coordinate.

采用轴测投影法，通过三维坐标的二维投影变换，实现空间静电场的计算机模

When the axonometry projection plane is parallel to a coordinate axis, and the coefficient of axial deformation of two axes that parallel to the coordinate plane are equal, the cabinet axonometry is produced.

轴测投影面平行于一个坐标轴，且平行于坐标平面的那两个轴的轴向伸缩系数相等的斜轴测投影称为斜二等轴测图。

A back projection method of the filtered back projecion algorithm is proposed based on passive raydriven technique and preinterpolation technique.

提出了滤波反投影（filtered back projection， FBP）算法的基于被动式射线驱动和预插值的反投影策略。

A back projection method of the filtered back projecion algorithm is proposed based on passive ray-driven technique and pre-interpolation technique.

提出了滤波反投影(filtered back projection， FBP)算法的基于被动式射线驱动和预插值的反投影策略。

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照片纸的质地与通常冲洗的照片一样，该介质配合"照片质量制卡技术"可获得同照片一样逼真的效果，并且可以提供从普通照片大小到A3+的四种尺寸，适合各层次用户照片制卡的需要；开心妙妙贴是一种独特的制卡介质，用户可借助制卡机配套软件提供的300余种五彩缤纷的背景图框与照片叠加，进行最富想象力的搭配，制成极富个性魅力的开心妙妙贴贴纸；喷墨布纹纸是一种A2幅面三米长具有油画制卡效果的介质，适用于制卡各种大幅照片、艺术设计图片的需求；用户可以用T恤转印纸制作具有自己独特风格的T恤衫，效果相当不错；喷墨透明胶片能提供完美的投影效果，适用于投影、会议及广告等，图象生动逼真，可制卡36 0dpi；横幅大标题纸可用360dpi、720dpi或1440dpi 制卡，适合为各种活动制卡横幅。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。