查询词典 radiation energy

According to Rayleigh-Jeans law,the emission of the object is directly linear to its absolute temperature.As the frequency of object increases,Rayleigh-Jeans Law deviates from Planck's Blackbody Radiation Law,and the radiation of object received should be calculated according to Planck's Blackbody Radiation Law.

由 Rayleigh-Jeans公式计算的物体的辐射功率与其物理温度成线性关系，但是随着物体频率的升高，Rayleigh-Jeans公式与Planck定律的近似误差越来越大，此时应根据Planck定律计算物体的辐射功率。

Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.

单馈反射面赋形天线是未来星载天线发展的一个重要形式，分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场；介绍了基于几何光学的反射面天线赋形方法；针对赋形过程中辐射场的快速分析要求，比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法；利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析，实现中国大陆的30dB增益覆盖，通过数值计算研究了固定增益期望下的口径尺寸随频率的变化，以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。

The actual object heat radiation model is established after comparing the actual object heat radiation to the ideal black body radiation.

文中对辐射测温原理，传感头材料，单波段检测技术及检测波长选择做了理论分析。

The MRI signs of brain radiation injury include: definite history of brain radiation therapy, neurologic symptoms emerged after certain period of treatment, the location of lesion coincided with the radiation field, mainly located in white matter, with edema and mass effect, consistent with the MRS result, no dyscrasia.

放射性脑损伤MRI特点：有明确放疗史，神经系统症状於放疗后一定时期出现，定位与放射野吻合，多位於白质；无恶液质表现；有水肿及占位效应，MRS分析结果符合。

Active galactic nuclei activity in the form of expression in:(1) intense light changes, that is, optical and radio radiation intensity over time, there are Big changes;(2) is very strong luminosity, even more than the Eddington luminosity;(3) significant non-thermal radiation, especially in the infrared region of the non-thermal radiation reached the maximum;(4) a strong movement and a huge gas jet stream.

活动星系核活动的形式表现在：（1）剧烈光变，即光学和射电辐射强度随时间有很大变化；（2）非常强的光度，甚至超过爱丁顿光度；（3）巨大的非热辐射，尤其在红外区的非热辐射达到最大；（4）强烈的气体运动和规模巨大的喷流。

Thus,acute radiation sickness of moderate degree was ascertained.It was deduced that 3 other members in Feng's family died of ARS.Altogether about 100 ictims were found.Conclusion When ealuating a patient with suspicious burn without a history of contact of heat or fire and caustic chemicals and the patient has nausea,omiting,epilation and decrease in white blood cells,the possibility of radiation exposure exists.If some patients with aboe manifestations are found in a same family the radiation exposore may be more probable.

如遇到难以解析的皮肤烧伤病变，排除热或化学烧伤后，应考虑放射烧伤，对有恶心，呕吐，脱发，口腔溃疡，外周血细胞减少者，更支持诊断；如家中成员中相继发生上述同类症状者更应高度怀疑，并作相关检查确诊；简易隔简可为一般医院所采用；细胞因子可促进造血功能恢复，缩短病程。

Thus,acute radiation sickness of moderate degree was ascertained.It was deduced that 3 other members in Fengs family died of ARS.Altogether about 100 victims were found.Conclusion When evaluating a patient with suspicious burn without a history of contact of heat or fire and caustic chemicals and the patient has nausea,vomiting,epilation and decrease in white blood cells,the possibility of radiation exposure exists.If some patients with above manifestations are found in a same family the radiation exposore may be more probable.A simple isolation ward can be set in an ordinary hosiptal and GM-CSF is used to reduce the course.

如遇到难以解析的皮肤烧伤病变，排除热或化学烧伤后，应考虑放射烧伤，对有恶心，呕吐，脱发，口腔溃疡，外周血细胞减少者，更支持诊断；如家中成员中相继发生上述同类症状者更应高度怀疑，并作相关检查确诊；简易隔简可为一般医院所采用；细胞因子可促进造血功能恢复，缩短病程。

To calculate numerically the radiation of a enclosure within a heteromorphosis cavity, attention was focused on: how to decide the visibility between two surfaces, how to improve the old method of configuration factor computation, how to approximately and efficiently decide the radiation resource of directional, spectral radiation in cavity.

讨论了解决异型封闭腔辐射几何学问题的几种方法：异型封闭腔内，表面间可见性的判断方法；优化异型封闭腔角系数计算的方法；确定异型封闭腔内定向辐射的壁面辐射源的方法。计算了两种结构喷管封闭腔内的角系数，并从角系数的互换性和完整性定理验证了方法的正确性和有效性，为异型封闭腔的辐射计算解决了几何问

A series of theoretical and experimental studies on the microstrip patch antennas with dielectric superstrates is carried out systematically. Firstly, a comprehensive survey of the microstrip antenna technology and its theories are presented. Then, two analysis techniques, named as the spectral domain Green's function method and the spectral domain integral equation method are developed. The SDGF method is a simplified analysis technique, which takes advantage of the spectral domain immittance approach to find the dyadic Green's function for the stratified media, and obtains the complete closed-form formulas for radiation patterns, directivity, efficiency, gain etc. Some interesting calculated results are presented. The SDIE method is capable of determining resonant frequency, radiation characteristics, input impedance etc, for the covered microstrip patch antennas. Comparing with other full-wave analyses it reduced computation and mathematical labour remarkably. The singularities near the pole location of the surface-wave modes and the difficulty of the integral computation over infinite range of oscillating integrands are dealt with actively and documented well. Results predicted by the SDIE method agree extremely well with our experimental results for resonant frequencies of various superstrates. The superstrate effects on impedance and radiation characteristics also have been investigated experimentally so that the gap due to lack of measured data and computed results for multi-layered superstrate has been filled to some degrees and two useful observations have been achieved for weakening the resonant frequency shift and optimizing the microstrip antenna gain. As a meaningful application, the design and analysis of a 4×4 patch array are introduced.

实用微带天线普遍加介质覆盖层来防护热，物理损伤和环境影响，也可能在飞行或严酷气候条件下自然形成覆盖层本论文对带介质覆盖层的微带贴片天线系统地作了一系列理论和实验研究首先，对微带天线技术和理论作了全面的综述然后，发展了两种分析方法，称为谱域格林函数法和谱域积分方程法SDGF法是一种简化的分析技术，它利用谱域导抗法来求得分层媒质的并矢格林函数，并得出方向图、方向性系数、增益等参数的完整的闭式公式，给出了一些令人感兴趣的计算结果SDIE法能确定介质覆盖微带天线的谐振频率、辐射特性和输入阻抗等与其它全波分析方法相比，它明显减小了计算量和数学工作量已有效地处理了表面波模极点附近的奇异性和对振荡的被积函数的无限区间积分计算的困难对于不同覆盖层情况下的谐振频率，由SDIE法所预示的结果与我们的实验结果吻合得很好对于覆盖层对阻抗和辐射特性的影响也已作了实验研究这在某种程度上填补了缺少实验数据和计算结果之间的间隙，并得出了缓解谐振频率偏移和优化天线增益的两点有用的结论作为有意义的应用，介绍了一个4×4元矩形贴片天线阵的设计和分析。

It was found that the practical value of the relative intensity of ultraviolet radiation in the radiation distance of 50 to 100 cm was conincident with theoretical one calcuIated by the square inverse ratio law. In the radiation distance of 25 cm, the practical value was less than theoretical one.

但实际上治疗用的紫外线灯管多为U型灯管，光照强度与光源距离的关系是否仍符合平方反比定律曾有不同意见，为此我们进行了紫外线照射距离改变对强度影响的测试。

Now she was hungry and angry.She began to smoulder.

现在她又饿又气，她开始流露难以抑制的怒火。

You have placed our iniquities before You, Our secret sins in the light of Your presence.

诗90：8 你将我们的罪孽摆在你面前、将我们的隐恶摆在你面光之中。