查询词典 beams

In the standard measurement, such as bar code through a splitter, will be divided into two beams of light, a bunch of switch hitting the sensor photodiode array, and the other a bunch of change reach all parts of the observation mirror.

在水准测量中，条码的像通过一个分光器，将光线分成两束，一束转射到传感光电二极管阵列上，另一束转射到观测镜上。

On the basement of conventional direct fan-beam reconstruction, this paper gives a newly improved algorithm-"fast filtering-backprojection". This method utilizes the symmetrical circle geometry to sample projection data, and reconstructs image on the Polarcoordinate firstly, then translates this reconstructed image onto the cartesian coordinate system with two interpolating operations so that the computer can show the result image on the VGA screen. This algorithm rebates the calculating backprojection greatly, and shortens a few times of reconstructing time than same kinds of means. With the size of image enlarging, the reconstructing time abates with 2 exponent times. In addition, according to the idea of parallel-beam, we rearrange the fan-beams and reconstruct image using parallel-beam method fastly. The rearranging constraint condition is given here.

本文首先在传统的扇束直接重建方法的基础上，提出了一个改进的快速滤波反投影重建算法，它利用旋转采集投影数据的圆周对称的几何关系，先在极坐标系统内进行图象的重建，然后通过两次内插运算再将图象转换到计算机显示方式下的笛卡尔坐标系中去，该方法将以往的直接重建方法中的反投影时所需的运算大大降低，并将重建时间比同类方法缩短了几倍，而且随着重建图象的尺寸的增大，重建时间以2的指数次方倍相对缩短，并获得了较好质量的重建图象；另外，又根据平行束投影重建图象的思想，对扇形射束进行了重排，然后利用平行束重建图象的方法进行扇束的重建，并推导了&扇束重排重建图象&方法的约束条件。

The numerical results indicate that the collimating performances of two lens changed little as the increasing of the refractive index and this made it possible to choose the material of the lens in more field.Theoretically,the radiation angle of laser diode beams in the quick axis can be compressed under 0.1 mrad.

结果表明：这两种柱透镜的准直效率随折射率的变化不大，这在一定程度上提高了透镜材料选择的灵活性；并且理论上，共轴双半椭圆柱透镜可以将半导体激光光束快轴方向的发散角压缩到0.1 mrad量级。

A nonlinear full-range analysis of bearing brick masonry longitudinal wall has been carried out in this paper. A combination plane frame composed of RC beams and brick masonry columns is choosed as computational diagram.

对混合结构的承重纵墙进行非线性全过程分析，计算简图是由钢筋混凝土梁和砖砌体柱组成的组合平面框架，采用实际刚度法的杆系模型。

The experimental results indicate that the CFRP and steel plate combination strengthening method can effectively improve the load capacity of RC beams, restrict the development of existing cracks andenhance section stiffness, and by using the U style steel plate hoop anchorage system, sudden debonding failures can be avoided.

试验结果表明：碳纤维与钢板复合加固钢筋混凝土梁能有效地提高截面承载力，约束裂缝的发展，提高刚度；加载点及端部采用的U型钢板箍较好地防止了梁中剥离破坏的发生。

This utility model disclosed a multifunctional medical bed, which includes bedstead, bed board and the ups and downs institutions, bedstead has a four box beams, two fixed and two longeron longeron Events, bed board are four longitudinal medial convex-concave shape of the edge was the cross-cutting board, threeéups and downs, including the board and connected the three screw or hydraulic cylinder, the multi-functional medical bed may also include raised his sick body.

本实用新型公开了一种多功能医用床，它包括床架、床板和起落机构，床架四框内有一根横梁、两根固定纵梁和两根活动纵梁，床板是四块纵向内侧边缘呈凹凸形状相互交叉的板子，起落机构包括三块樘板和与其连接的三个丝杠或者液压油缸，该多功能医用床还可以包括病人抬起机构。

The voltage amplitude difference of the two pulses can be less than 2%. The electron beams are emitted from a velvet cathode in a vacuum diode. The beam currents are up to 3kA, measured both by a Faraday cup in anode hole and by a shunt resistor at the rail of the LIA injector.

实验结果表明：该双脉冲电子束源可以产生双脉冲电子束，其电压幅度差值小于2%，束流可达3kA，并且工作稳定，利用该装置可以进行多脉冲二极管物理和天鹅绒多脉冲发射特性实验研究。

He had an acetylene6 torch for cutting thick steel plates and beams.

在我听来，那乙炔炬发出的切割声比蒸汽机火车头发出的声音还要大。

Another task that needs to be done before the deck beams are glued (I use 30 minute Epoxy for glue) in is to cut a notch at the center point of the beam where the centerline deck beam will be placed.

另一项任务，需要做前甲板上梁的胶合板（我用30分钟的环氧树脂为胶），是在切开一个缺口在中心点梁如中线甲板束将放在。

Beams supporting metal deck or slabs formed with metal decking may be considered supported at points of attachment between the beam and the deck.

如果横梁用于支撑金属板平顶屋或者用于支撑由金属面板组成的厚平板，则可认为此横梁的支撑点在横梁与平台之间的附属物上。

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