查询词典 ceiling projector

An optical system with refraction and total internal reflection was proposed according to the luminous characteristic of LED and the law of energy conservation. The ordinary differential equations satisfying the spots on the contour curve of TIR refractive and reflective planes were established. The coordinates of points on profile curves were obtained by solving these ordinary differential equations using Runge-Kutta method. The profile curves were acquired by curve fitting of the coordinate spots with software UG, and then TIR model of the projector and data of the surface shape suitable for NC manufacture were obtained.

根据LED的发光特性以及能量守恒定律选择采用折射全反射光学系统，通过建立TIR折射面及全反射面轮廓曲线上的点所满足的常微分方程，利用RungeKutta求解常微分方程得到轮廓曲线上点的坐标，再在UG中对坐标点进行曲线拟合得到轮廓曲线，进而得到TIR模型及适合数控加工的面形数据。

Teaching aids to prepare multimedia CAI courseware, printed handouts data projector ●● teaching arrangements and the process of teaching a lesson lead students grasp the key statement, clarifying the article thinking, analysis of the father image, and understand that subject.

教具准备多媒体CAI课件、打印好的讲义资料、投影仪●课时安排1课时●教学过程［教学要点］引导学生抓关键性语句，理清文章思路，分析父亲形象，领悟主旨。

So there is not much leeway to place the projector off of dead center horizontally.

因此，没有太多的回旋余地地方死点水平投影机起飞。

Or you can use a rear shelf mount, and aim the projector more or less dead-on at the screen.

也可以使用后置搁架安装，并在屏幕投影目的或多或少死的。

Apparatus of enterprises yes, the machining center of South Korean Daewoo, the electric spark machine in Taiwan, the line is cut, milling machine, lathe, all kinds of grinding machine wait for, checkout equipment have three Japan abundant to count, show slide caliper rule, accurate measuring instruments such as high ruler, depth gauge rule, dial gauge, the projector,etc..

企业的设备有，韩国大宇加工中心，台湾电火花机，线切割，铣床，车床，大小磨床等，检测设备有日本三丰数显千分表卡尺，高度尺，深度尺，千分表，投影仪等精密测量仪器。

While this won't stop someone from stealing the projector, it will provide a disincentive - if they know it exists.

虽然这不会阻止别人偷投影机，它将提供一个不利因素-如果他们知道它的存在。

Duces, it is used in some real planetarium projector products. Some amateur astronomy- and magazines.

有些天文爱好者还使用 Stellarium 绘制他们文章中用到的星图。

The projector is subject to rejection and may be eject ed from the project.

投影机有遭到否决的倾向并可能被逐出工程。？

The projector is subject to rejection and may be ejected from the project.

计划人的科目被拒绝，他可能被这个工程拒之门外。

The projector is subject to rejection and may be ejected from the

投影机有遭到否决的倾向并可能被逐出工程。？

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。