查询词典 beam-focusing

The original beam spot profile that is separated by the shadoW mask is obtained from the masked beam spot on the screen.

最后给出了在有荫罩隔离的情况下，在彩显管荧光屏前测出的完美电子束斑。

I will also try to design parallel plates so I will not need to use wedges to shim the seat beam and head beam.

我也将尝试平行板设计，所以我将不再需要使用挖起杆，以心所在地束流和头部束。

Based on Matlab, simulation program of grating diffraction is complied. By changing adjustable parameters, computer simulations of white light interference and diffraction experiments (i. e., grating diffraction, single slit and double-slit diffraction, double-beam and multi-beam interference experiments) can be achieved.

基于Matlab软件编写出白光光栅衍射仿真程序，通过改变可调参数实现白光干涉、衍射实验（包括：光栅衍射、单缝及双缝衍射、双光束及多光束干涉等）的计算机仿真。

Then based on the second-order moment method, the closed-form expression of the beam width is obtained, and the beam waist width and waist location for elegant cosh square Gaussian and Sinh square Gaussian beams are also deduced.

基于二阶矩定义，分别推导了复宗量双曲余弦平方-高斯光束和双曲正弦平方-高斯光束的光斑尺寸、束腰宽度及其位置，并对结果作了详细的分析和讨论。

In this paper, the process of a test on a specimen of long span floor beams system and the test methods are introduced to research the process of moment redistribution between the spandrel beam and floor beam.

通过介绍一榀 8m× 6m大跨度次梁楼盖试验构件的有关试验方法及试验情况，探讨大跨度次梁楼盖中边梁与楼面梁之间弯扭分配的变化过程，并将试验实测结果与弹性理论分析值进行比较，给出此类结构中有关构件的参考设计方法。

The method for design thin-wall core box cast-in-site concrete hollow floor using common structural computing software is put forward and the scale for the magnifying stiffness coefficient of the spandrel beam and middle beam is discussed.

提出了采用常用的结构计算软件计算薄壁箱体现浇混凝土空心楼盖设计的方法，提出了边梁和中梁刚度放大系数的建议。

Expanding a monochromatic electromagnetic beam into the sum over a seriesof plane waves using the spectral representation technique derives the generalforms of the scattering formulae of a monochromatic electromagnetic beamincident on wire grids. The general forms of the scattering power formulae of amonochromatic electromagnetic beam by wire grids are presented by usingPoynting theorem.

应用平面波谱技术将单色电磁波展开成连续平面波序列，由平面波入射金属栅网的散射公式推导了单色电磁波通过金属栅网的散射场一般公式，并应用坡印亭定理推导其散射功率的一般表达形式。

The results infer that the spatialfrequency has nothing to do with the position of spherical wave and the attribute of reference beam and object beam.

空间频率与参考光和物光的属性、球面波会聚点的位置无关。

Survival fractions of melanoma B16 cells at different penetrationdepths exposed to 49.30MeV/u 12C ion beam and modulated 74.55MeV/u 12C ion beam with a ridge filter to form a spread-out Bragg peak were measured.

测量了49.30MeV/u及经脊形过滤器展宽的Bragg峰的74.55MeV/u12C离子束在不同贯穿深度上辐射后黑色素瘤B16细胞的存活率。

The frequency characteristics of this system are related to two ratios: the ratio of the beam and rigid hub inertia J＇, the ratio of the torsional spring and beam bending stiffness K＇.

实验和理论分析均表明，刚柔惯量比J＇和刚柔刚度比K＇对系统的频率有着重要的影响。

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％。