激光束

Other surgical options are laser treatment, in which the wart is destroyed using a very precise laser beam, and electrocautery, in which the wart is burnt off using an electric current.

其他的手术方案，是激光治疗，其中，疣是摧毁使用一个非常精确的激光束，电，在该疣是被烧过使用电流。

According to the requirement of precision diameter measurement of the single crystal silicon sphere, the principle and characteristics of the measuring system were presented, and mathematical models were established for calculating the ellipticity of concentric interference rings with different beam incident angles.

针对标准单晶硅球直径精密测量的需要，本文在介绍标准硅球直径测量系统原理并分析其光路特点的基础上，根据建立的数学模型，对激光束斜入射标准板时产生的椭圆干涉图像进行了分析，并对不同入射角度时干涉环中心点带来的直径测量误差进行了研究。

The equation describing the evolution of the laser spot is derived.

考虑有质动力与电荷分离场的平衡，推出了超短超强脉冲激光在低密度等离子体中的折射率、电子密度和电荷分离场的表达式以及激光束斑的演化方程。

Competition among four-wave mixing with two dressing fields, the six-wave mixing with one dressing field as well as the eight-wave mixing propagating along the same direction can be evoked by adjusting laser beams because these multi-wave mixing signals are induced by atomic coherence between common levels.

研究发现，通过调节激光束方向，沿同一方向出射的八波混频、双缀饰四波混频和单缀饰六波混频信号因共用能级的原子相干产生而出现竞争现象，通过控制缀饰场减弱四波混频和六波混频信号强度，可以达到增强八波混频信号的目的。

To avoid individual influence, liquid surface tension is measured by detecting angles of incidence at cylindrical liquid menisci instead of detecting climb height of liquid on flashboard.

通过测量激光束两边沿在液体表面的入射角来求得表面张力系数，解决了插板法测液体表面张力系数的液面上升高度和接触角检测难题，避免了人为因素的影响。

The diffraction distributions of Gaussian beam limited by the circular apertures with different sizes in scanning objectives focal plane were studied, and then the effective spot radius in focal plane was calculated using second moment and compared with the ideal one. The influence of apertures with different sizes on resolution was analyzed.

在不同孔径圆孔的限制下，对扫描物镜焦面上的衍射光场分布进行数值计算，并利用二阶矩统计的方法对焦面上的等效光斑半径进行数值计算，将其与不受限时的理想情况进行对比，分析孔径尺度对激光束扫描系统分辨率的影响。

When the laser beam frequencies differ, a fringe pattern of alternate dark and light stripes is created.

当激光束的频率不同，条纹候补黑暗和轻的条纹，是创建。

Both theoretical intensity profile of the interference fringe pattern and experimental measurement are presented.

给出了聚焦激光束照射平板样品时两反射光束在远场形成的干涉场光强分布和调制光束加热时的光热干涉信号表达式。

This paper provides an overview of status about laser beam shaping at home and abroad. The theory of beam shaping transformation, including geometric optics and matrix optics, is presented.

本文综述了国内外对于半导体激光束整形技术的研究现状，阐述了研究光束整形变换的理论方法，主要包括几何光学、矩阵光学。

Geometric optics is often simplified even further by making the

即使仍然使用近轴近似，这一技术可以部分描述衍射，能够精确计算激光束随距离传播的速率以及其最小的汇聚尺寸。

I'm gonna go pack my regular, long bathing suit.

我要去打包我那不起眼的超长泳裤

Random number generators are used in many areas, with the improvement of the computational ability of the computer.

随着计算机计算能力的不断提高，随机数发生器在许多领域有了更加广泛的应用。