查询词典 concave lens

One slightly concave cylindrical lens combination is used to change one laser beam into small sector in small angle, and one reflector projects the laser beam to prism driven by a motor to rotate in high speed to produce one reciprocating and scanning small sector plane.

采用微凹柱面透镜组将激光光源发射的一束激光拉成具有微小夹角的小扇面，利用反射镜将此激光束透射到由电机驱动的高速旋转多面棱体上，使激光束产生一个小扇形往复激光扫描光平面。

It utilized a concave lens to reflect the incident light in lithography process and controls the exposure dosage in photoresist. Micro-pyramid array in photoresist is then developed onto the substrate.

利用凹透镜改变曝光机入射光的角度，控制曝光剂量於光阻中，以成型出四角锥柱微结构，并将其应用在导光板制造技术上。

The hybrid gel film on curved surface can replace traditional light-sensitive lacquer, and improve the grating's stability. The VLSG with the line density of 80l/mm was fabricated on a concave lens surface with curved radius of 100mm.

采用这种方法在曲率半径为100mm的凹球面基底上制作了平均线密度为80l/mm的光栅，并用环境扫描电镜以及数字图像处理法检测了光栅的线密度分布。

Three LEDs biology light sources with different intensity for cell or tissue culture have been developed in the third part of this thesis. A concave lens to expand the beams of light, to focus the rays of light and an array of LEDs being set in the sphere connected with Fresnel lenses are three newly-designed in our systems.

实际测试数据表明：低强度光源输出的辐射照度范围为0.0021—0.9961(W／m~2)，在直径20mm的照射面积内所测辐射照度的标准偏差为0.02W／m~2(n=40，Mean：0.71 W／m~2)；中等强度光源输出的辐射照度范围为0.3579—11.2286(W／m~2)，在直径30mm照射面积内所测辐射照度的标准偏差为0.02W／m~2n=60，Mean：6.37 W／m~2；较高强度光源输出的辐射照度范围为17—110(W／m~2，在直径40mm照射面积内所测辐射照度的标准偏差为0.02W／m~2(n=80，Mean：71.54 W／m~2)。

The eyes were periodically examined by retinoscopy, and A-scan ultrasonography. Two weeks later, the eyeballs were removed and the apoptotic cells were determined by electron microscopy, TUNEL technique and flow cytometry in scleras. Both bFGF and the bcl-2 protein were determined by the immunohistochemisty method and the Western-blot method. Results: All eyes treated with -10.00D or -20.00D concave lens produced defocus-induced myopia.

实验前后用睫状肌麻痹下验光、A超动态观察豚鼠眼屈光度和眼轴长度，并取后极部巩膜组织，用电镜、终末脱氧核糖核苷酸转移酶介导原位缺口末端标记法和流式细胞术检测巩膜的凋亡细胞，应用免疫组织化学染色和蛋白印迹（Western-blot）法检测bFGF和bcl-2蛋白。

Aberration of the concave mirror is reduced by a meniscus lens.

用半月板镜头减少凹透镜的过失。

As shown, a thin convex lens with focus length 10 cm and a concave

如上图所示，一焦距为10 cm的薄凸透镜和一半径为20 cm的凹球面反射镜共轴。P点球心

His boldness lies in realizing that he could eliminate the spherical aberration by placing a thin, very weakly curved lens ("correction plate") of special smooth shape (convex near its middle, concave near its periphery, and flat in between) at the same location as the apertured diaphragm.

他的勇气，就在于实现，他可以消除球面像差放置一个薄，非常弱弯曲镜头的特别顺利形状（凸近其中，凹附近及其周边地区，并在单位之间的）在同位置作为光阑膈肌。

In addition, if you want to set up a 2.35 format screen without an anamorphic lens, you can do that on both projectors by using the powered zoom lens adjustments to zoom back and forth when you change from 2.35 to 16:9 material.

此外，如果你想建立一个没有变形镜头一2.35格式的屏幕，你可以做两投影机使用电动变焦缩放调整镜头来回当您从2.35更改为16：9材料。

This eliminates the need to buy an anamorphic lens, but it introduces the nuisance factor of having to manually adjust the zoom lens and vertical picture height as well every time you change the format of the viewing material.

这消除了需要购买的变形镜头，但它引入了滋扰的因素，而不必手动调整变焦镜头和垂直图片高度以及每次改变格式的浏览材料。

So Mr Emmons visits each house every four months, and by then the people are usually ready to buy new btooms.

因为埃蒙斯先生需要花上四个半月的时间才能拜访完居住在这个区域的每一家，所以他每过4个月才会拜访同一家。到时候人们通常准备会买新扫帚了。

The hippo comes to the monkey and said, listen, I'm not a hippo.

河马来到猴子面前说："听着，我不想做只河马！"