- 更多网络例句与射束相关的网络例句 [注：此内容来源于网络，仅供参考]
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The feasibility of RDF as a dosimeter for measuring the electron beams of a medical accelerator was studied.
材料与方法：本研究所探讨RDF剂量计，为FWT-70系列的两种不同型号RDF剂量计；高能量电子射束为医用直线加速器所输出能量为6~20MeV的电子射束。
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Objective: The sensitivity response of radiochromic dye film dosimeter with high energy electron beams was studied in this paper.
目的：本文系探讨辐射色染(radiochromic dye film； RDF)剂量计，对高能量电子射束的敏度反应，以作为度量放射治疗用电子射束剂量的可行性。
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Thus, two kinds of intensity oscillations with phase difference of 180°can take place corresponding to the specular elastic diffraction and diffuse scattering.
因此在不同的观测条件下可出现二种相位差180°的强度振荡情形：镜向弹性衍射束强度振荡和漫散射束强度振荡。
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Next, we reviewed the connection between RBLs and XBLs and the energy radiative process of BL Lacertae. Synchrotron radiation from radio to optical band and inverse Compton Scattering in γ ray wavebands are a wide accepted point. The beam model and gravitationally lensed model are two models associated with the radiative process. At present people tends to favor the previous one.
接着我们对射电选BL Lac型天体和X射线选BL Lac型天体之间的关系以及BL Lac型天体的能量辐射机制进行了评述，从射电到光学的同步辐射和γ射线波段逆康普顿散射的观点受到大家的普遍接受，射束模型和引力透镜模型是与辐射机制相关的两种模型，目前比较倾向于射束模型的解释。
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The depth of central-axis percent dose Rx (except R100) and practical range, Rp, for small field electron beams can be calculated by the proposed empirical formula: Rx = Rxo ×,where Rxo R po are the broad beam percentage dose depth and practical range respectively; r is the small field cutout side when it is less than the maximum lateral scatter equivalent range, and m is he exponent term relative to the decreasing curvature.
小照野电子射束中心轴百分剂量深度，Rx（R100除外），及穿透深度，Rp，可以用本文提出的经验公式：Rx = Rxo×计算求得，其中Rxo及 Rpo分别为宽射束百分剂量深度及实际穿透深度；r为边长小於最大侧散射等效范围的小照野边长；m值为与下降曲度有关的指数项。
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When the injection pressure is about 0.1MPa, the air flow through the injector becomes critical, so if the swirl level variation reaches the required range, the pressure should be kept as low as possible.
空气射束的喷射压力越大，涡流比的变化范围也越大。而当喷射压力达到0.1MPa左右时，空气在喷嘴内的流动已接近临界状态。因此，射束喷射压力不宜过高，在满足涡流变化要求的前提下，喷射压力应尽量低一些。
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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。
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Due to the TomoTherapy machine intrinsic characteristics, some mechanical items, such as the gantry, the couch angle, the collimator etc., do not need to be checked. Additionally, no electron beam verification is needed but the same beam effect can be formed from the different beamlets of the machine.
再者，由於多模式螺旋断层放射治疗仪机器的本质结构特性，有些品质保证测量项目不须实施，如在机械方面不须要做旋转臂、治疗床、准直仪之品质保证测量校正工作，所以在例行的品质保证测量工作上较为简单；此外因多模式螺旋断层放射治疗仪只有单一光子射束(6MV)，而没有电子射束所以在品质保证量测上不须测量电子射束，因而简化许多程序，但电子射束的特性可以由不同的小射束组合来达到相同的效果。
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It is treated with six fields (Anterior, Posterior, four obliques) positioned 60° apart around the circumference of the patient, each dual field is made up of two component beams, pointing ±15° with respect to the horizontal. The nominal energy of electron beam produced by Mevatron Ⅻ is 3MeV, and the patient is treated at a distance of 3 meters. Using Capintec dosemeter and PS-033 electron beam chamber for measurement, one moniter unit of radiation is equivalent to 0.0127cGy. Measurement of electron energy by Kodak X-omat-V verification film inside the Rando phantom at 100 cm SSD was 3.70MeV, electron energy measured at 3 meters was 3.51MeV. X-ray contamination was measured as 9.5% per six dual fields.
此种方法分别使用六个双照野，由病人的前、后、左前、右前、左后、右后各间隔60度共六个方向照射，每一双照野由水平向上和向下15度照射；荣民总医院选择3MeV电子射束来治疗病人，治疗距离为3公尺，利用擬人假体及柯达X-omat-V验证片实验得电子射束初始能量从3.7Mev变为3.51MeV，六个双照野之X光污染共达9.5%，使用Capintec剂量表及PS-033型电子射束用游离腔测量六个双照野，每一监测单位相当於0.00127 cGy。
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Using a systematic approach and the concept of ＂pure HOLZ case＂ for electron diffraction,the convergence of the conventional multislice methodand the second-order multislice methodfor calculating higher-order Laue zoneeffects was studied.
高能入射电子与样品的体周期较长，或当晶体较大地偏离带轴时，HOLZ衍交互作用是一个复杂的电子弹性和非弹性散射过射束都会有较大的强度，此时，HOLZ衍射不能忽程。
- 更多网络解释与射束相关的网络解释 [注：此内容来源于网络，仅供参考]
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beam deflection：射束偏转
beam current 束电流 | beam deflection 射束偏转 | beam deviation 光束偏移;横臂偏转
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beam deflection tube：射束偏转管
beam deflection 射束偏转 | beam deflection tube 射束偏转管 | beam density 束淋度
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fanning beam：扇形射束
fanned-beam antenna 扇形天线,扇形射束天线 | fanning beam 扇形射束 | fanning strip 扇形片
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beam null line：射束零线(重力仪)
射束孔径 beam aperture | 射束零线(重力仪) beam null line | 射束黏附(重力仪) beam sticking
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play-off beam：抹迹射束,回扫射束
play yard 游戏场 | play-off beam 抹迹射束,回扫射束 | play-over 直接播放
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diffracted beam：绕射束
diffract 绕射 | diffracted beam 绕射束 | diffracted intensity 衍射强度
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pencil beam antenna：铅笔束天线,锐方向性波束天线,锐锥形射束天线
pencil-beam ==> 铅笔形波 | pencil-beam antenna ==> 铅笔束天线,锐方向性波束天线,锐锥形射束天线 | pencil-outlined wash drawing ==> 铅笔淡彩
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rotary beam antenna：射束旋转天线
rotary beam aerial 射束旋转天线 | rotary beam antenna 射束旋转天线 | rotary beam splitter mirror 旋转射束分离镜
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beam deviation factor：射束偏移系数
beam density 射束密度 | beam deviation factor 射束偏移系数 | beam diameter 束直径
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beam deviation factor：电子束偏移因数, 射束偏向因数
beam deflection || 射束偏转 梁弯曲度, 梁的挠度 | beam deviation factor || 电子束偏移因数, 射束偏向因数 | beam deviation loss || 波束偏移损耗