激光

The purpose of studying this project is that as the benchmark plane the laser planethat is produced through cylindrical lens can be used to measure minutely based onthe stability of the laser plane.

本课题研究的主要目的在于利用激光束通过柱面透镜产生的激光平面作为基准平面，并依靠激光平面的稳定性来进行系统的精密测量。

The laser cutting head for tipping paper comprises a laser, a laser beam expanding system and a cylindrical surface focusing mirror.

水松纸激光切割头由激光器、激光扩束系统、柱面聚焦镜组成。

The laser beam emitted by the laser is expanded to the cutting width required by the tipping paper via the laser beam expanding system, the expanded laser beam passes through the cylindrical surface focusing mirror and 4 focuses on the focal plane form a focal line and the tipping paper is cut off by the focal line on the focal plane.

由激光器发出的激光束经激光扩束系统将激光束扩大至水松纸所需的切割宽度，经扩束后的激光束通过柱面聚焦镜，在焦平面4聚焦形成一条聚焦线，水松纸在焦平面上被此条激光聚焦线割断。

To investigate the dispersive character of cylindrical Rayleigh wave, a finite element model is developed to simulate laser inducing cylindrical Rayleigh waves on the surface of an isotropic cylinder.

为了研究柱面上激光激发的瑞利波的色散特性，建立了激光在各向同性圆柱表面激发瑞利波的有限元模型。

Methods A total of 430 eyes in 251 cases of diabetic focal macular edema, diffuse edema and cystoid edema were treated with krypton yellow laser photocoagulation.

目前激光光凝术已成为治疗糖尿病性黄斑水肿的常用方法，但激光参数的选择是临床治疗十分重要而又难统一的问题。

By adopting the high performance of directional property and brightness of laser, a diagram for establishing a plumb datum line with the method of rotation and circle center tracking is presented.

利用激光本身的方向性好、亮度高等优点，提出以激光垂准仪为基本部件，用旋转跟踪圆心法建立铅垂基准线的方案。

Compared to the experimental measurements, good agreement is obtained near threshold region. It is shown that the fluctuations of the fundamental and second harmonic light in the laser field decrease as the cavity decay constant increases.

研究结果表明，激光场基波和二次谐波的涨落随空腔衰减常数的增大而减小；当激光场中含有乘性噪声时，乘性噪声能增强基波的涨落，同时抑制二次谐波的涨落。

The principle and way of dectecing ultrasonic displacement of solid surfaces with laser heterodyne and phase-lockedloop to demodulate are described.

论述了应用激光外差和锁相环解调原理探测固体表面超声位移的原理、方法，并利用激光外差干涉仪对固体表面的超声位移进行了探测，得到了很好的结果。

The stability of the open ladder inversionless lasing system was analyzed by using the steady state solution of the density matrix motion equations of this system and the motion equation for the laser field.

利用开放的ladder型无反转激光系统的密度矩阵运动方程组的定态解和激光场运动方程分析了系统的稳定性。

However, delivery error of LGWs are mainly the designation error from laser designator.

而激光制导武器投放的主要误差来自于激光目标指示器的指示误差。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。