查询词典 beam

Under the support from the CNSF, our group has been working on the accelerator scheme study based on the high intensity cyclotrons. The goal is to obtain beam power of 10 MW by a cascade of cyclotrons, e.g. 10 mA in beam current and 1 GeV in energy.

本基金项目开展了高功率强流质子回旋加速器的调研、方案研究和一些加速器物理问题的研究，也开展了研究内容相近的-散裂中子源的高功率质子加速器的研究，取得了多方面的研究成果。

It will decrease when the pointing angle increases,and vice versa.By giving a pixel size of 20 μm for a detector,an orbit altitude of 600 km and a beam deflexion angle low than 30° for the imaging spectrometer, the effective focal length of the telescope was calculated(400,470 or 435 mm),and the relation curves between the relative ratios of ground resolution and the beam deflexions were presented.

给定成像光谱仪探测器像元尺寸为20 μm，飞行轨道高度为600 km，光线摆角≤30°，以星下点、最大摆角和整个运动补偿段地面分辨率中值为30 m为依据来计算望远系统的焦距，求得望远系统焦距为400、470、435 mm，并给出了此时的地面分辨率相对比值与光线摆角的关系曲线。

In this paper, we study the quantum tunneling effect of a cold atomic beam propagating through a laser beam which is blue detuned.

这种量子隧穿效应在微观粒子中得到了广泛的理论[1—17]和实验研究[18—24]，并在一些实际的电子器件中得到了应用[25，26]。

The flexural capacity, deformation and failure modes of beams with different parameters can be analyzed using the program, such as types of plan and prestressed tendons(extrenal prestessed tendons, internal unbonded prestressed tendons, internal bonded prestressed tendons), jacking and effective stress in external prestressed tendons, configuration of the deviators, properties of tendon, ratio of span to effective depth of the beam and load pattern, initial loading state at tendon jacking, etc.(3) Nonlinear behaviors of the concrete beam prestressed with external or internal unbonded tendons were studied by the program developed.

本程序可以对任意截面型式的预应力(体外预应力筋、体内无粘结预应力筋、体内有粘结预应力筋)混凝土梁和普通钢筋混凝土梁进行非线性全过程数值分析计算，程序可以就转向块的布置方式、体外预应力筋纵断面形状、体外筋有效预应力的大小及材性、张拉预应力筋时梁的持荷状态等因素对体外预应力混凝土梁在外荷载作用下的强度、变形特征、破坏模式等的影响进行分析研究。

The effed Of three-dimensional perturbed velocities and three-dimensional perturbed current densities on the beam-wave interaction of plasma-filled dielectric Cherenkov maser is analysed by use of the self-consistent linear field theory without considering the effect Of the longitudinal guided magnetic field.The dispersion relation and the Simultaneous condition of the beam-wave interaction are derived. It is clearly shown that the instability of the interaction results from the coupling of the TM mode in t...

在无引导磁场的作用下，利用自洽线性场理论，分析了电子的三维扰动速度和三维扰动电流密度对填充等离子体的介质切伦可夫脉塞注波互作用的影响，导出了注波互作用的色散关系和同步条件，所得关系清楚地表明，其工作用不稳定性是由填充等离子体的介质筒慢波波导中的TM模与电子注模通过电子注耦合所致，并求得了电子注引起的频偏和波的增长率。

High-quality epithermal neutron beam is one of the key conditions for making Boron Neutron Capture Therapy of malignancy successful. The objective of this study is to design the epithermal neutron beam which meets the clinical requirements for BNCT.

高品质的超热中子束是硼中子俘获治疗恶性肿瘤取得成功的一个关键条件。

In this paper, normal section bearing capcity of SRC beam is analyzed from three aspects on the basis of force character of upper flange of shaped steel in SRC beam.

文中根据型钢混凝土梁中型钢上翼缘的受力特点分三种情况对型钢混凝土梁的正截面承载力进行了分析。

Further more, the intensity distribution of output beam of single fiber and multi-fiber coupled laser diode is discussed. The pumping effect is studied by using the model of flat-topped beam.

在此基础上结合实际，讨论了单根光纤和多根光纤耦合LD的输出光束的光场分布，并利用已建立的平顶光束模型分析了它们的泵浦特性。

In this design, we have the total construction layout, such as from basic to the main, from the column and beam to the floor, masonry; another breakdown of the process, such as the support beam template, the Bangzha steel, concrete pouring, Also joined the safety management, construction and other projects of civilization, so that our construction design more comprehensive, concrete, to facilitate construction.

在本设计中，我们有总的施工布置，如从基础到主体，从柱、梁到楼板、砌体；又有分项的工艺流程，如梁模板的支撑、钢筋的绑扎，混凝土的浇筑，还加入了安全管理、文明施工等项目，使我们的施工组织设计更加全面、具体、便于施工。

Calculate by hand at first, finish loading and calculating; Electricity regard as begin, finish floor, times of calculation of roof beam, The floor matches the muscle, the form construction drawing of roof beam.

首先进行手工计算，完成荷载计算；电算开始，完成楼板，次梁的计算，楼板配筋，梁表施工图。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。