查询词典 flux of radiation

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。

For radiation flux calibration based on double-monochromator, in order to overcome the faults of small viewing field and small aperture of trap detector, a radiation flux calibration method with a one-diode detector in stead of trap detector is proposed.

在基于双单色仪的辐射通量定标中，为了克服陷阱探测器视场小、孔径小的缺点，提出了采用单片式探测器替代陷阱探测器进行辐射通量定标的方法。

Most of the current finite element software packages treat it using the net-radiation method or absorbed radiation method based on the assumption of isothermal surface with uniform radiation heat flux,which brings the conflict between the precision and the quantity of grids.

进行了选用高阶单元、采用高斯积分精确计算单元表面变辐射热流方法的研究，从而摆脱了一致表面温度和辐射热流的假设，使得在相同网格密度的情况下计算精度大大提高；同时，从包含辐射换热问题的有限元计算方程出发，采用与有限元数值计算时相同的积分方案，只在独立的积分点处计算辐射热流，克服了积分方法计算效率低的缺点。

Fig.7. The distribution of the net radiation flux at the top of the atmosphere inferred from NIMBUS 3. Plots of the zonally averaged net flux, the flux along 90°E and along 20°N for July 1969 are shown.

根据"雨云"3 号资料推算出的大气层顶净辐射通量分布。1969 年 7 月纬向平均净辐射通量，沿 90°E 的净辐射通量和沿 20°N 的净辐射通量分布。

English: 672. Fig.7. The distribution of the net radiation flux at the top of the atmosphere inferred from NIMBUS 3. Plots of the zonally averaged net flux, the flux along 90°E and along 20°N for July 1969 are shown.

图7 。根据"雨云"3号资料推算出的大气层顶净辐射通量分布。1969年7月纬向平均净辐射通量，沿90°E的净辐射通量和沿20°N的净辐射通量分布。

The cases with temperature boundary condition and heat flux boundary condition are discussed, and the results prove that this model can be applied to the analysis of radiation heat transfer between the pressure tube and calandria tube.

计算结果表明，该模型可以用于TACR压力管和排管间辐射换热能力的计算。

The results of numerical experiments show that mean terrain height and orographic relative standard deviation over a large scale grid area are two important factors which have influence on the mean flux of surface long wave radiation.

由于地表有效辐射通量是海拔高度的非线性函数，在特定情况下，其影响相当大，可产生不容忽略的误差。

It is theoretically demonstrated that the influences of terrain height and orographic heterogeneity are important on the flux of surface long wave radiation over a large scale grid area.

摘要从理论和数值试验两个方面证明地形的非均匀性对网格区地面长波辐射通量的计算有重要影响，海拔高度场的区域平均值及其变差系数是影响网格区地面长波辐射通量的主要因素，仅仅用地表均匀假定下的区域平均参量（如平均海拔高度和平均温度）所计算的网格区地表有效辐射通量值与其真实值之间存在着一定的误差。

In conventional sonde based on the detection of different purposes such as the determination of ozone , stratospheric dew point, a variety of radiation flux, the atmosphere electric, the lower atmospheric pollution monitoring, etc.

在常规探空仪的基础上，根据不同的探测目的（如测定臭氧、平流层露点、各种辐射通量、大气电场、监视低层大气污染等）或不同的仪器施放方式（如从飞机、气象火箭、平移。。。

The expansion of the H II region produced by the large flux of ionising radiation can significantly reduce the accretion rate when the protostar reaches 50 100M, but accretion can continue in the equatorial plane.

当星坯的质量达到50-100太阳质量的时候，电离辐射产生的HII区的膨胀可以大大削减吸积率，但是在赤道平面上的吸积过程依然可以继续。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。