查询词典 gammar radiation

Left-handed materials have many strange properties,such as negative refractive index, negative group velocity ,perfect imaging,inverse Doppler effect and abnormal Cerenkov radiation.

本文介绍了左手材料的概念、原理和它具有的负群速度、负折射率、理想成像、逆Doppler频移、反常Cerenkov辐射等种种奇异的物理性质。

The new electromagnetic properties of negative index material such as converse Cerenkov radiation and converse Doppler effect,negative refraction index and perfect lens are analyzed and explained by using basic electromagnetic theory.

从基本的电磁场理论出发，分析和解释负折射物质的电磁特性，以及负折射物质中的逆Cerenlov现象、逆Doppler现象、负折射率和完美透镜的工作原理，帮助人们更加清楚地认识负折射物质的本质特性，更好地开发和应用好负折射物质。

They have many strange properties such as negative phase velocity, negative refractive index, perfect imaging, inverse Doppler effect and abnormal Cerenkov radiation.

负折射率介质最早由前苏联科学家Veselago在20世纪60年代从理论上提出来的，是一种具有介电常数ε和磁导率μ同时为负值的介质，它具有诸如负相位速度，负折射率，理想成像，逆Doppler频移及反常的Cerenkon辐射等多种奇异的物理现象。

In this paper, we argue that the new Cerenkov line-like radiation mechanism suggested by You et al. can provide a solution for the puzzle of EW(subscript Kα)/EW(subscript Kβ). We present a detailed model consideration and theoretical calculation.

给出了详细的模型考虑和理论计算，结果表明活动星系核中产生铁K线的机制不只有莹光机制还有Cerenkov线状辐射机制。

They have many strange properties such as negative group velocity , negative refractive index, perfect imaging, inverse Doppler effect and abnormal Cerenkov radiation.

它具有诸如负群速度、负折射率、理想成像、逆Doppler频移、反常Cerenkov辐射等种种奇异的物理性质。

High-current short-pulse electron-beam ; Cerenkov radiation ; CCD camera ; Linear induction accelerator

强流短脉冲电子束；切伦科夫辐射； CCD相机；直线感应加速器

Cerenkov radiation liquid scintillation measuring wavelength shifter quenching quench correction

契仑柯夫辐射；液体闪烁测量；波长转移剂；淬灭；淬灭校正

The unique negative refractive materials possess some unusual properties, such as negative refraction ,reverse Goose-Hanchen shift and negative Cerenkov radiation ,however all of these phenomena do not violate any fundamental principles.

然而，所有这些现象并不会有悖于基本原理。

Our calculated result shows that, except for the fluorescence emission, there coexists a Cerenkov line-like radiation mechanism in AGNs, which gives a significant contribution to the iron K-line emission, even moderately higher than the former.

两者共存于活动星系核中，而且以Cerenkov辐射机制为主。

The volume effect to the measurement of Cherenkov radiation of 32P water solution is studied.

对32P水溶液切连科夫辐射测定中体积因素对测定结果的影响进行了初步研究。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。