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Property comparison of optical thin films prepared by E-beam,ion assisted deposition and ion beam sputtering.

电子束、离子辅助和离子束溅射三种工艺对光学薄膜性能的影响。

With the ever-increasing needs of high power diode laser source, it is important to obtain symmetric diode laser beam with high power so that a kind of beam-shaping technique with isosceles right-angled prism group has been used to achieve this aim.

随着半导体激光器应用的日益广泛，半导体激光的光束质量在二维方向极不均衡的特点限制了它的应用范围。采用一种等腰直角棱镜组的整形方法，可实现二维方向的光束质量均匀化。

A strength model of end-plate was presented by modifying the strength model of the T-stub which was set up by Kulak in 1987 and by presenting two hypotheses about the stress distribution on the beam section located at the connection of beam and end-plate.

对传统T形件连接强度模型作了修正，建立了端板连接节点的端板强度模型。提出了节点处梁端截面应力分布的两个假设，给出了端板屈服弯矩的近似计算方法。

Laser Beam Propagation and Beam Quality Control.

激光束的传输变换与质量控制。

The definition of beam width is significant for the quality of laser beam.

结果表明不同定义的束腰宽度是不同的。

In turn, more sectors will be read in a single revolution of the disk when the laser beam is scanning the outer portion of the spiraled track than when the beam is scanning the inner portion.

所以，要是盘片旋转一整圈，那么激光柱在电子扫描螺旋形磁道外边时读到的扇区个数要比里边多。

This invention relates to an improved laser beam useful in material surface processing and an apparatus for producing the improved laser beam.

本发明涉及一种在材料的表面处理中很有用的改善的激光束以及一种产生改善的激光束的装置。

Therefore, the study of the lattice beam and the research of the beam designing method are very necessary.

因此，加强对混凝土格构锚固体系中格构梁受力机理和设计方法的研究，是十分必要的。

Designtheory of RC lattice beam is studied by analytic solution of the beam on Winklerelastic foundation quantificationally.

2提出了格构锚固结构的力学模型，利用Winkler弹性地基梁上的解析解定量研究了钢筋砼格构梁的设计理论及各参数的优化取值。

So we can analyse the stability of lattice structure as solid web beam without change its geometry dimension. The out-of-plane stability of bending beam, which is made up with 2 beams and loaded by non-directional force, is studied.

对两节梁组成的弯曲梁在非保向力作用下的平面外失稳问题进行了研究，通过建立每节梁临界状态下弯曲和扭转变形微分方程，根据杆件变形的边界条件以及杆件之间的变形协调关系，得出了一端固定一端悬臂的弯曲梁在非保向力作用下平面外失稳的特征方程。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。