查询词典 gamma rays

The maximum entropy principle is utilized to calculate the probability of stochastic rays undergoing k reflections.Finally,the applications of stochastic rays are investigated: the...

最后介绍使用随机射线建模超宽带室内信道的多径传播轨，在此基础上可以得到信道特性建模的基本随机变量，以及无线电波传播的概率模型等应用。

Rays striking the earth at an angle have to plough through many more miles of atmosphere than rays coming straight down from overhead.

斜射在地球上的光要比头上直射下来的光多经过许多英里的大气层。

The paper presents a new filling-sample method by which the sample quantity filled in a box depends on the energies of γ-rays to be measured. The detection efficiencies of HPGe detector were calculated by using Monte-Carlo method for various γ-ray energies and at various soil sample quantities in a box, and the optimal filling-sample quantities for different-energy γ-rays from radioactive nuclides of 238U, 232Th, 226Ra, 40K, are respectively obtained.

本文提出了样品装量与待测γ射线能量有关联的装样方法，并用蒙特卡罗方法模拟计算了不同能量γ射线的探测效率与样品装量之间的关系，得到用HPGe γ谱仪分析238U、232Th、226Ra和40K等放射性核素活度各自的最佳装样量。

Among all sorts of radiotherapy equipments, linear accelerator fundamentally takes use of electronics rays and X-rays to treat an illness.

在常用的治疗设备中，直线加速器主要是利用电子线和X射线照射靶区来达到治病的目的。

The first profile encloses a Master card that generates between two and six infrared rays and transmits them to a Slave card, placed inside the second profile that has the task of retransmitting the rays received to the Master card, acting as a kind of "electronic mirror".

一侧嵌入发射器，在两侧之间产生六道红外线，投射向安装在另一侧的接收器，再经其返回发射器，类似一种&电子反射镜&。

As professor of physics at the University of Wurzburg, he was experimenting with a Crookes' radiometer when he noticed that when cathode rays struck the end of the tube, rays of a new kind were emitted that were capable of penetrating matter.

作为Wurzburg大学的物理教授，Roentgen当时正在使用Crookes的放射计进行试验。他注意到当阴极射线撞击到射线管的末端时，会发出一种能够穿透物体的新型射线。

Methods Totally 123 patients with KD were hospitalized from Jun. 2002 to Dec. 2003. The remedy [Intravenous gamma globulin 1 g/ injection one to two days plus acetylsalicylic acid reducing gradually after defervescence] and cardiac compliance within 2 years were analyzed.

方法对2002年6月～2003年12月123例住院KD患儿进行为期2年的随访研究，重点监测超声心动图异常及其恢复情况，⑴分析静脉丙种球蛋白1 g/治疗1～2 d联合口服阿司匹林方案的疗效；⑵随访心血管并发症的恢复情况。

The neutron monitor has high sensitivity, light weight and small size. A charge pump circuit is adopted for I-F converter of the gamma monitor. Local data acquisitor consists of CMOS single piece processor with high speed and low power dissipation. A FLEX microcomputer is used as remote centre computer for data handling and graph plotting.

它们的特点是：中子监测器的体积小、重量轻、灵敏度高；γ监测器的测量电路采用电荷泵电路构成的I-F变换电路；本地数据采集器是由高速低功耗CMOS单片计算机为核心组成的；远端中心计算机采用了FLEX微计算机系统对数据进行处理，并以绘图的方式输出，给出直观、便于分析的结果。

Blazars are one of the most extreme classes of active galactic nucleus, with high luminosity, large amplitude and rapid variability, high and variable polarization, radio core-dominance, and apparent superluminal speeds. Their broad band emission extends from radio up to gamma-ray band, and is dominated by non-thermal process.

中文摘要：在AGNs中，Blazar天体是具有极端性质的一类，它以大幅快速光变、高且变化的偏振、射电核主导、视超光速运动、全波段非热辐射为主要特征。

Alternatively, the spectral softening above 2 GeV could be due to gamma-ray absorption via photon-photon pair production on the soft X-ray photon field of the host active galactic nucleus, but such an interpretation would require the dissipation region to be located very close (l~100 gravitational radii) to the black hole, which would be inconsistent with the X-ray spectrum of the source.

另外的关于2 GeV以上能谱变软的可能解释是高能光子和寄主活动星系核的软X射线辐射场通过电子对产生反应而被吸收，但是这个解释要求反应区域要很靠近中心黑洞(1~100倍引力半径)，这和3C 454.3的X射线测量谱相矛盾。

But Severus escaped the hands of those that Julianus had sent to murder him and sent a letter to the praetorian guard, giving them the signal either to desert Julianus or to kill him.

赛维鲁总算逃过了尤利阿努斯派来的杀手，并写了一封信给罗马的禁卫军，向他们发出信号，要么抛弃尤利阿努斯，要么干掉他。他们立即服从了。

This text is in terms of this of " human nature ", it is under the influence of western literature human nature thought to probe into, awakening in human nature of novel works and all sorts of limitations that affectionate The school of Mandarin Duck and butterfly.

本文便是从"人性"这一角度，探讨在西方文学人性思想的影响下，清末民初鸳鸯蝴蝶派的言情、哀情小说作品在人性方面的觉醒与种种局限。