查询词典 beam-focusing

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。

Aims at the deficiency of foundation opposite force distribution hypothesis of existed calculated model, the article carries through the indoor model experiment of prestressed anchor-cable and lattice beam, and analyses the actual distribution situation of the soil stress at the bottom of the lattice beam.

本文针对现有计算模型对格梁底部地基反力的分布假设的不足，进行了预应力锚索格构梁的室内模型试验，并对格梁底部土体应力的实际分布情况进行了分析。

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％。