Suddenly one day, a street shoot-off in the hands of the lens accidentally captured me, the crowd around me and become a hero of the background plate.
忽然有一天，一个街头拍客手中的镜头无意间捕捉到了我，我和身边人群成为了某个主人公的背景板。
A new experimental scheme of measuring lens focal length has been put forward on the basis of the improved laser plate shearing interference method.
本文在改进的激光平板剪切干涉法基础上，提出了测量透镜焦距的一种新的实验方案。
The apparatus consists of the standard color plate, optical lens, the light source was observed, colorimetric tube.
本仪器由标准色盘、观察光学镜头、光源、比色管组成。
This text is to compare Frensnel s zones plate with ordinary lens, on the axle point of light intension and focal distance as well as their difference in use.
当光通过菲涅耳半波带与普通透镜时，可发现在轴上点的光强、焦距以及用途上的不同。
The shading plate is assembled on the lamp holder and positioned between the illuminating part and the lens, and is used for shading partial light emitted by the illuminating part.
该遮光板组装在该灯座上并位于该发光件与透镜间，该遮光板用于遮挡发光件所发出的部分光线。
He suddenly found a steel plate under the lens of the eye-catching is one of the SLR.
他突然发现在一块钢板之下有一道镜片的耀眼的反光。
The experimental results are given of the two kinds of compensation plates consiting of hologram plate and photoconductive thermoplastic plate for improving image quality of the Fresnel optical lens.
给出了“全息干版”和“光导热塑片”制备的两种“补偿板”对菲涅耳透镜进行象质改善的实验结果。
When the reflector takes photos, the shading plate can be synchronously closed, so that glare from a lens can be blocked and the photographic quality can be ensured.
当这个反光镜进行照相操作时，遮光板同步闭合，使来自镜头的眩光被遮挡，保证照相质量。
It ACTS as a two-cylindrical lens system. The other is prepared by overlapping a line-type zone plate and a circular zone plate.
另一种是一个线型波带板和一个圆型波带板的组合，效果相当于一个凸透镜和一个柱面透镜的组合。
Fresnel's plate can focus incident rays producing very strong brightness the function of which resembles lens forming images.
菲涅耳波带片可使入射光会聚起来，产生极大的光强，使点光源形成一系列的实像点和虚像点，其作用如同透镜成像。
The design prameters of focus lens and image system are given, and the dynamic measurement error in vibration of the plate is also analyzed, and the way of its autocompensation is presented.
本文在比较各种板厚测量方法的基础上，根据成象原理着重论述了差动式激光三角法测厚技术，讨论了聚先进键和咸象系统结构参数的设计，分析了板材抖动产生的动态测量误差，并提出自动补偿的途径。
The influences of factor F and modeling plate on the lens' optical efficiency are also analyzed.
还分析了透镜相对孔径 （F数 ）和成型模具等因素对透镜光学效率的影响。
Results indicate: (1) At stage 19 the lens plate separated from the presumptive corneal epithelium and weak fluorescence appeared in its basal cells.
结果表明：角膜上皮与内角膜细胞均可合成、分泌胶原蛋白。
Results indicate: (1) At stage 19 the lens plate separated from the presumptive corneal epithelium and weak fluorescence appeared in its basal cells.
结果表明：角膜上皮与内角膜细胞均可合成、分泌胶原蛋白。
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