查询词典 beams

For beams employed in any span between supports there shall be no splice in the middle one-fourth of the span nor in the one-eighth of the span nearest any support, nor closer than 1200 mm to the edge of any support/joint, as applicable.

在任何支撑点的跨距内使用的梁，在跨距中间的四分之一位置上，不得有拼接口，在靠近支撑的八分之一跨距位置上，不得有拼接口。在应用上，接口与支撑/接头边缘的距离不得小于

From above analyses,the main contents of this dissertation is the theoreticalstudy of aberrated Gaussian beams both co-axis and off-axis the optical systems.

鉴于以上分析，本论文的主要任务便是与精密激光光学天线及其类似的激光光学系统设计密切相关的高斯光束像差理论研究，并考虑了同轴和离轴两种情况。

Based on the beampropagation equation in free-space, the hyperbolic-fit mothed is used to calculate theM2-factor of Gaussian beams passing through a spherically aberrated lens.

根据自由空间束宽的传输方程，采用双曲线拟合的方法，计算了高斯光束通过球差透镜后的M2因子。

In chapter four,based on diffraction theory,we derived the far field intensitydistributions near geometric focus for off-axis Gaussian and uniform beams passing througha primary aberrated optical system.

在第四章中，基于衍射理论，推出了离轴高斯光束和均匀光束通过一个初级球差光学系统后，其几何焦点附近的远场光强分布公式。

In this dissertation, based on the beam propagation equation in the free-space, the hyperbolic-fit mothed is used to calculate the M2- factor of Gaussian beams passing through a spherically aberrated lens for the first time.

本论文根据自由空间中光束的传输方程，利用多点拟合的方法，通过数值计算，首次研究了激光束通过球差透镜后的M~2因子随球差的变化规律，并用M~2因子、桶中功率和K参数作为光束质量评价参数，讨论了透镜的像差、遮拦比等对激光光束质量的影响。

Beam quality of Gaussian beams passing through a spherically aberrated annular lens

性质：反应器各种状态参数随空间位置连续变化的数学模型。

The intensities of the light beams from the four analyzers with different azimuths are measured simultaneously.

检偏器组由4个不同方位角的检偏器组成。

All the other public basilicas had flat ceilings supported by wooden beams.

所有其他的巴西利卡都是由木梁支撑的平顶结构。

IMRT is a new technology that is different from CRT. It uses multiple radiation beams that are broken up into many smaller beamlets. This allows radiation oncologists to precisely target the radiation to the tumor and spare the adjacent normal structures from high doses of radiation.

调强适形放疗是一种新型技术，它使用已经被分成众多细小光束的放射线，这可使放疗医生精确地确定肿瘤位置而临近正常组织不受到照射。

In addition to valuable sculptures, calligraphy, colorful columns, brackets and beams decorated with the most delicate of carvings, precious brocades and silks, gold and precious stones, the murals

除了珍贵的雕像、书法，以及手法细腻的雕梁画栋，珍贵的锦缎丝绸、黄金宝石之外，这里的壁画尤其令游客难以忘怀。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷