Others began considering the virtues of a concave paraboloidal mirror as primary receptor: it had been known since Antiquity that such a mirror would bring parallel incident rays to a focus at one point.

其他人開(kāi)始考慮的美德，凹拋物面反射鏡作為主要受體：它已被稱為自古以來(lái)這樣的一面鏡子一级AⅤ，會(huì)帶來(lái)平行事件射線的焦點(diǎn)在1點(diǎn)性爱黄色欧美日韩。

The ray from the plasma lamp will go through into the light pipe with little incident angle after reflection by the reflector, and then the total reflection of the ray will occur among the prismatic reflecting films. Some ray may come to the end mirror and will be reflected back, and only a little of rays pass through the prismatic reflecting films, most of the rays will go forward by the action of the bottom light extracting surface and go out to be lighting.

等離子燈球發(fā)出的光線經(jīng)過(guò)反射器反射后，以很小的入射角進(jìn)入到導(dǎo)光管人人干人人操人人舔人人摸，光線在棱鏡反光膜管子內(nèi)進(jìn)行全反射玖玖色热在线，到達(dá)丙烯酸樹(shù)脂管端底鏡面的光線，再反射回到管子內(nèi)部国内美女精品人AV在线播放，只有少量的光線透過(guò)棱鏡反光膜出來(lái)欧州免费AV午夜福利，最終大部分光線通過(guò)管子底部的光線提取面引出管外，傳送到所需要照明的寬廣區(qū)域（見(jiàn)圖7）su4.com。

Based on Fermat's principle and light path function, it gets the spectral distribution of the incident rays, and it can get the ray tracing map through a matrix method.

在費(fèi)馬原理的基礎(chǔ)上利用光程函數(shù)法得到入射光通過(guò)光柵后的光譜分布情況欧美A片精品，再使用傳輸矩陣的計(jì)算方法構(gòu)造出光譜的點(diǎn)列圖。

summer solstice; the Summer Solstice：夏至

257 2009-06-22 1 太陽(yáng)直射 direct splar radiation; vertical incident solar rays; direct sol... | 258 2009-06-22 1 夏至 summer solstice; the Summer Solstice | 259 2009-06-10 1 crass adj. 粗魯?shù)? 愚鈍的, ...