查询词典 lens

To investigate the prevention of anti-apoptosis drugs (sodium ferulate, SF; schisandrin B, Sch B; flos chrysanthemi, FC; semem planagines, SP) on lens epithelial cell damaged by oxidative stress, and to study the changes of intracellular-free calcium, cyclic adenosine monophosphate and cyclic guanine monophosphate, in order to disclose the mechanism of signal transduction in cellular and molecular level.

目的 本研究旨在探讨细胞凋亡抑制剂阿魏酸钠、五味子乙素、菊花、车前子对氧化损伤的晶状体上皮细胞内Ca2+、环磷酸腺苷、环磷酸鸟苷的影响，从细胞信号转导角度揭示天然药物防治白内障的细胞和分子学机制。

Methods: The anterior chamber depth, lens thickness, vitreous chamber length and ocular axial length were measured for 270 eyes before and after cycloplegia. The corneal shapes of 136 eyes selected randomly from the 270 eyes were studied before and after cycloplegia by a computerized video keratoscope.

检测儿童不同屈光状态270只眼在睫状肌麻痹前后的前房深度、晶状体厚度、玻璃体腔径、眼轴长度的变化以及睫状肌麻痹后的屈光状态。

A sectional hyperbola cylinder sound lens using for oil recovery is designed according to the refraction law of sound.

对于一定的油井，无法改变油井中的原油及其岩层对超声波的衰减作用，但是，利用声透镜可以改变超声换能器所辐射出的超声

By extending the VBG external cavity length, and inserting a convex cylindrical lens between external cavity and LDA for transmiting. Phase-locked of external cavity is achieved by tilting of Bragg Grating external cavity. Experiment studied the stability of the in-phase mode far-field output at 35A. Wavelength is locked at 802 nm. The Full-Width Half-Maximum of locked specrum narrowed to 0.2 nm and the corresponding far-field divergence angle is 1.8 mrad.

通过拉长VBG外腔腔长，在VBG外腔和LDA中间插入平凸柱面透镜，采用偏转体布拉格光栅外腔进行外腔锁相研究，在注入电流35A时，获得稳定的同相单瓣模远场输出，波长锁定在802nm，中心主瓣峰值半宽压窄到0.2nm，对应的远场发散角为1.8mrad。

AIM: To evaluate the effect of wearing cylindrical lens on dry eyes.

目的：观察长期配戴散光镜对散光的干眼患者的治疗作用。

Image field losses are analyzed on the basis of the Bragg-mismatch and solved by utilizing one cylindrical lens.

提出了利用极化子效应进行双色选通存储的物理机制，并得到了实验上的验证。

The results are detailedly compared with those of commercial application using aspherical cylindrical lens.

对自聚焦光纤透镜的原理进行了分析，综合考虑到自聚焦光纤透镜的焦距和端面研磨的方便，确定了实验中自聚焦光纤透镜的长度。

ZEMAX software is used for optical ray tracking of the system to get images after cylindrical lens.

利用ZEMAX光学软件对系统进行光线追迹获得光束经过柱面镜后的聚焦情况。

The effects of cylindrical lens shape and the laser-fiber distance on relative coupling efficiency are also studied.

给出了一个计算980 nm泵浦激光二极管与柱形透镜光纤耦合角向容忍度的理论模型，并选择圆形的柱透镜光纤进行数值计算，得出了在水平和垂直方向上偏转加平移时的相对耦合效率及绕光纤轴向转动的相对耦合效率的数值计算结果并加以分析，同时也研究了光纤透镜的形状和激光二极管与光纤的间距对相对耦合效率的影响。

The bicycle and the young man on it were unbelievably shortened in the direction of their motion, as if seen through a cylindrical lens.

自行车和上面的年轻人都不可思议的沿着他们的运动方向被缩扁了，就像透过柱面透镜看一样。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。