光束

By using the method of expanding the aperture function into a finite sum of complex Gaussian functions, approximate closed-form propagation equations of TMn0-Gaussian beams diffracted by hard-edged parallelogram aperture s are derived.

通过将硬边光阑函数展为复高斯函数之和的方法，在直角坐标系下研究了TMn0模高斯光束通过有平行四边形光阑的衍射，得到了近似的解析传输公式。

Based on the Collins formula, the analytical propagation equations for a Gaussian beam through a multiple spatial filter system are derived by using the methods of the matrix decomposition and expanding the aperture function into a finite sum of complex Gaussian function .

以Collins衍射积分公式为基础，利用A0CD矩阵分解与物理实现的技巧，以及将硬边光阑窗口函数展开为有限个复高斯函数之和的方法，推导出了高斯光束通过多级空间滤波器系统的传输方程，并用数值计算加以说明。

The propagation of cosh Gaussian beams through a first order paraxial optical system with rectanglar hard aperture is studied. By using the expansion of the rectangle function into a finite sum of complex Gaussian functions a closed form propagation equation of cosh Gaussian beams is derived.

对双曲余弦高斯光束通过有硬边光阑的一阶ABCD光学系统的传输进行了研究，采用将矩形域函数表示为复高斯函数叠加的技巧，推导出了解析的传输公式，在特殊情况下，该公式简化为在无光阑情况下的传输公式。

Because of the large diameter drum and photoptic finy laser points that are provided by color copier copy level and business card printing and membership card making it difficult to distinguish between workers'original and the principle of digital copiers using electronic scanning with the laser beam to the drum to have a very advanced image processing features.

由于采用大直径感光鼓及微细激光点，这些复印机所提供的彩色复印水平与制卡和会员卡制作的原件难以区分；其数字式复印机采用电子原理扫描文件，并用激光光束把图像显示到鼓上，从而具备了非常先进的图像处理功能。

A Jedi can predict and deflect incoming blaster bolts , and reflect them back at the firer .

运用原力，一个绝地可以预测到并抵挡射来的爆破光束，并把它们反弹回射击者身上。

Comparing with traditional flash lamp, diode-pumped solid-state laser has a lot of advantages, such as lower thermal effect, higher efficiency, compactness, longer lifetime, stably, reliable and high power output with high beam quality.

与传统紫外波段的准分子气体激光器和长波段激光相比，激光二极管泵浦的全固态紫外激光器具有转换效率高、高重复率、性能可靠、体积小、重量轻、光束质量好及其运行成本低等优点。

Besides, the factors which affected the distance between the two positions and the size of the flattop profiles were studied.

此外，还研究了对于不同的聚焦透镜焦距和环形光阑中心拦截比，不同空间相干度对平顶光束的影响。

All the beams are only designed for major direction flexure and shear.

所有的光束仅仅是专为专业方向的挠度和剪切。

This time, Li Hui chooses to use florescent light instead of laser lights to create a different ambience.

这次，李晖选择以日光灯取代雷射光束，试图创造出不同的氛围。

Stability of resonator with thermal lensing inside is discussed by optical transmission matrix. The fluctuation range of thermal focal distance affects the laser power and the beam quality.

运用光学传输矩阵的分析方法对内含热透镜元件谐振腔的稳定性进行了分析，讨论了热焦距的波动性对激光输出功率和光束质量的影响，提出了固体激光器谐振腔设计的基本原则。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。