查询词典 beams

When laser light strikes the surface of a tiny reflective display chip, made from liquid-crystal on silicon, the crystals both diffract the beams and alter the phase of the light waves, creating images that are in focus at all distances from the projector.

当激光打击一个极小的、由液晶硅制成的反射显示片，上面的晶体即会使光束产生衍射，也会改变光波的相位，产生来的是无论距离投影仪远近都处于焦点下的画面。

Monte Carlo simulation is one of effective ways to get this kind of dosimetric parameters. In this paper, the absorbed doses at the central axis in different phantoms with inhomogeneity media and finite sizes for small field size beams were simulated with Monte Carlo code system EGSnrc, respectively.

本文利用蒙特卡罗方法模拟计算了临床上常用的点源光子束在有限宽非均匀模体中的沉积能量，研究了不同射野条件下中心轴上的剂量分布，并用剂量扰动因子定量分析了剂量增强或减弱效应的强度。

In order to study Y style eccentrically braced link beams of behavior under seismicloading, the calculated model of link beam is established.

Y型支撑耗能梁段在低周循环荷载作用下的抗震性能研究，本文建立了耗能梁段计算模型。

By time-varying filtering, we realize the signal selectivity and interference suppression, especially for the signals with time-varying power spectrum. It is shown herein that conventional eigenstructure based methods are lower dimensional special case of the time-frequency subspace fitting method. The closed-form array response estimation algorithms for blind source separation in wireless communication is also developed in the dissertation by exploiting the data structure of second-order statistics of the array output in the presence of multipath. The proposed method achieves array response estimation with little constraint on signal property and propagation environment such as scatters or angular spread. Moreover, the array utilized here can be of arbitrary geometry and even uncalibrated. Since the closed-form solution is obtained, no misconvergency may occur and large amount of computation can be saved. The equivalent feed model and corresponding optimization designation are proposed to realize the downlink multi-user selective transmission. By coherent and non-coherent superposition of the electromagnetical field, multiple beams can be formed using a single array, so that each co-channel user signal is transmitted in each beam and will not interfered with each other. The proposed system scheme implements the digital beamforming and the channel allocation in the base band, therefore is suitable for the utilization of the radio software technology. The feasibility and effectiveness of the proposed model are proved by the RF experiment.

在窄带条件下，GSC－SSF方法还可以提高阵列的虚拟孔径，从而提高估计的性能；可以证明，Cyclic DOA 和SC-SSF方法可看作该方法的特例或近似； 3、提出了二维GSC－SSF方法和宽带谱相关DOA矩阵方法，利用信号的循环平稳特性解决了宽带条件下二维 DOA 估计问题，并具有阵元数少、计算量较小的特点； 4、提出了时频子空间拟合和宽带时频DOA估计算法，将联合时频分析的理论和方法引入到阵列信号的空间谱估计研究中，利用时变滤波实现信号选择性测向和干扰抑制，特别适合于谱时变信号；可以证明传统特征结构法可看作是时频子空间拟合方法的特例； 5、提出了多用户环境下阵列响应的估计方法——CARE方法，该方法对信号结构和传播参数（主要是散射源分布与角度散布）的约束较少，适用于各种几何结构的阵列甚至未校准的阵列，能够直接得到阵列响应的闭式解，因此计算量小、稳健性好，不存在收敛问题； 6、提出了针对多用户下行选择性发送的阵列等效激励模型、优化设计方法及其系统实现方案，通过空间场的相干叠加与非相干叠加使得单一阵列能够形成多个波束，并保证各波束内的用户信号各不相同且相互干扰最小；其系统方案具有在基带实现数字波束成形、信道分配并便于软件无线电实现的特点，其有效性已得到外场实测数据的证实。

Several steps including ct scan, target contouring and reconstruction of 3d digital structures were taken before treatment plans were designed through a cadplan computerized system which allowed a 3d crt and 4 imrt plans with 3, 5, 7 and 9 equispaced coplanar intensity modulated beams to be produced.

选取5例直肠癌病例，进行ct扫描、靶区勾画和三维图像结构重建，分别在cadplan治疗计划系统上进行三维适形和空间等分的3、5、7、9野的调强放疗计划设计，并对每一计划作出评价。

Focused Eyebeam: Two beams, one from each of Kologarn's eyes, appear to the right

集中眼睛光束：两道光束，每一道都是从科罗加恩的眼睛射出，分别会出现在目标的左方跟

Sweet is the breath of morn, her rising sweet, With charm of earliest Birds; pleasant the Sun When first on this delightful Land he spreads His orient Beams, on herb, tree, fruit, and flour, Glistring with dew; fragrant the fertil earth [ 645 ] After soft showers; and sweet the coming on Of grateful Eevning milde, then silent Night With this her solemn Bird and this fair Moon, And these the Gemms of Heav'n, her starrie train: But neither breath of Morn when she ascends [ 650 ] With charm of earliest Birds, nor rising Sun On this delightful land, nor herb, fruit, floure, Glistring with dew, nor fragrance after showers, Nor grateful Eevning mild, nor silent Night With this her solemn Bird, nor walk by Moon, [ 655 ] Or glittering Starr-light without thee is sweet.

同你谈话，我总是忘掉了时间，以及季节的转换，任何时刻都感到高兴：早晨呼吸清鲜空气，和早鸟一同歌唱，觉得舒畅；初升的太阳，在愉快的大地上，抛撒他那蔷薇色的光线，照耀着草、木、花、果，带露晶莹；细雨阵阵过后，丰腴的土地流芳；夕暮来临时心旷神怡，接踵而至的是沉静的夜，她有严肃的鸟儿、美丽的月亮和繁星，天上的宝石。但没有你时，一切都觉变了样：晨风不鲜，早鸟的歌唱不欢，尽管有太阳照耀大地，有草木花果的露珠晶莹，有雨后的流芳，愉悦的夕暮来临，沉静的夜也带来她那严肃的鸟儿，在月亮或亮晶晶的星光下散步，这一切，若没有你便没有快乐。

In this paper, the flexural behavior of reinforced concrete T beams strengthened with CFRP laminates was discussed.

本文主要研究了碳纤维布对钢筋混凝土T梁的抗弯加固。

Beams are also used between interior column footings to act as braces or ties or to support interior walls.

梁间内柱地基，也用来充当撑或联系或支持内墙。

He overlaid also the house, the beams, the posts, and the walls thereof, and the doors thereof, with gold; and graved cherubims on the walls.

3：7 又用金子贴殿和殿的楝梁，门槛，墙壁，门扇。墙上雕刻基路伯。

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％。