查询词典 beam-focusing

The paper introduces the measurement and research of some beam parameters using tune measurement system for Hefei Light Source, which include the betatron tune, beta function, natural chromaticity, corrected chromaticity, and central frequency.

介绍了利用合肥光源的工作点测量系统进行一些束流参数的测量及其应用研究，这些参数包括工作点、β函数、自然色品、校正色品以及中心频率。

When train running on the track, there has interaction between whiles and track, and the track will bend because of the weight of wheel. The bend wave will propagate to box-beam and further to bridge pier. Then the vibration propagate to around soil through the bridge pier, which can cause the second vibration on buildings.

列车运行时，车轮和轨道间存在着相互作用，由于轮重的作用使轨道产生弯曲变形，弯曲波通过轨道垫块传给箱型梁，进一步传递给桥墩，然后振动通过桥墩向周围土中传播，从而进一步引发建筑物的二次振动。

The effects of secondary torsion on shear strength of biaxial flexural reinforced concrete beam s are analyzed.

探讨了次生扭矩对钢筋混凝土双向受弯梁抗剪承载力的影响。

with the development of satellite navigation communication,antenna is a very important unit,performance of the satellite navigation communication system is affected by it partly.a new type of bifilar helix for satellite navigation communication system is introduced,and the traving-wave bifilar helix is analyzed briefly.meanwhile,the design and the test results are given.the results show that the antenna possesses excellent circular hemispherical beam with wide angle circular polarization and better impedance match,and has a compact structure and high integration.it can be applied in caps systems successful.

小 摘要：随着卫星导航通信技术的迅速发展，天线作为卫星导航通信系统中的重要部分，在一定程度上决定着卫星导航通信系统的性能。介绍一种用于卫星导航通信系统的双臂螺旋天线，讲述爬行波式螺旋天线的设计过程，并给出最终测试结果。结果表明，该天线具有优良的圆对称半球波束，良好的广角圆极化特性和优良的阻抗匹配特性，其结构简单、紧凑，为通信入站回传提供了一种优良的选择。

The system uses a kind of bifurcated optic fiber rather than a set of complicated beam-splitting elements.

该系统采用分叉光纤，省去了一套复杂的光学分光组件。

Based on three dimensional transient heat conduction equation and elastic stress-strain equation, the temperature rise, distortion and equivalent stress distribution of white bijou window irradiated by high power annular beam (λ=1.315 μm) are simulated using a three dimensional finite element model.

基于三维瞬态热传导方程和弹性应力－应变方程，研究了空心环形强激光束（波长1.315μm）辐照下白宝石窗口温度、变形和应力的分布规律；研究了空心矩形强激光束（波长3.8μm）辐照下氟玻璃窗口温度、变形和应力的分布规律。

A new laser direct writing method of binary beam-shaping element［J］.

一种二元整形元件激光直写方法的实验研究［J］。

After the analysis data,forecast the future of ion beam bioengineering of China.

在综合分析数据的基础上，展望了我国离子束生物技术的未来发展趋势。

Hybrid\|pencil beam model,which has been obtained by embedding the bipartition model into Fermi\|Eyges multiple\|scattering theory,shows the potential broad prospect in clinic because of the good calculation accuracy and efficiency.

将双群模型计算的宽束电子的能量沉积与Fermi Eyges理论的侧向解相结合来构造电子笔束模型，即混合笔束模型。

Hybrid\\|pencil beam model,which has been obtained by embedding the bipartition model into Fermi\\|Eyges multiple\\|scattering theory,shows the potential broad prospect in clinic because of the good calculation accuracy and efficiency.

d+ k$？' o1 |将双群模型计算的宽束电子的能量沉积与Fermi Eyges理论的侧向解相结合来构造电子笔束模型，即混合笔束模型。由于混合笔束模型的计算精度和效率较好，并且适用范围较大，因此，混合笔束模型展示了在放射治疗临床应用上的可能性。

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％。