查询词典 irradiance

The solar absorptance is calculated by assuming a Johnson solar spectra l irradiance distribution.

根据 Johnson太阳光谱分布计算了涂层的太阳光谱吸收系数。

With the establishmentof the equivalent medium model, RTM-DRE was applied to study radiative transfer intransparent medium with scattering particles. By taking into account of absorption andscatter of particles, absorption of binder and reflection of interface, the apparent spectrumabsorption model of thermal control coatings was developed by RTM-DRE combined withMies theory. Validity, computational error and time of the model were validated andanalyzed. Furthermore, the apparent spectrum absorption characteristics of thermal controlcoatings were studied, and the influences of optical characteristics of binder and particles,volume fraction of particles, particles diameter, characteristics of interface, and incidentangle of irradiance were analyzed.

采用RTM-DRE研究热控涂层内辐射传递，结合Mie氏散射理论，考虑粒子吸收与散射、基料吸收、界面反射等因素影响，建立热控涂层表观光谱吸收率计算模型，验证计算模型的正确性，分析计算模型的计算误差与计算时间；在此基础上，通过计算热控涂层表观光谱吸收率来研究热控涂层表观光谱吸收特性，分析基料与粒子光学特性、粒子体积份额、粒径、界面反射特性、辐射能量入射角等因素的影响，初步研究空间环境因素对热控涂层表观光谱吸收特性的影响，采用系统灵敏度理论定量分析热控涂层表观光谱吸收特性变化对卫星温度的影响。

Based on measuring data of relative solar irradiance on absorbers with cylindric shapes in evacuated collector tubeas well as that of solar absorptivity changing with incident angles on the coating,this paper has analyzed and investigated regular patterns of energy gain factor changing with incident angle at different center to center distances of ECT with cylindric absorbers.

在实验测定吸热板表面相对太阳辐照度和涂层太阳吸收比的基础上，分析研究了具有圆柱形吸热体的真空管集热器，在不同管中心距下的能量收益因子随光线入射角的变化规律。

In the regions of astrodome physics, solid physics, photochemistry and medicine, measurement and calibration of spectral irradiance of ultraviolet and vacuum ultra-violet have become more and more important research means and instrument.

紫外和真空紫外光谱辐照度的测量和定标，在天体物理、固体物理、光化学及医药学等领域中已成为越来越重要的研究手段和工具。

Noll. From the irradiance distribution in two defocal planes, one in front of focal plane and the other behind, with a given detector array the elements of response matrix for each normalized term of Zernike polynomials can be obtained. For an incoming atmospheric disturbed random wavefront, with its irradiance distribution detected in two defocal planes and the response matrix, it is easy to solve the corresponding Zernike term coefficients of incoming wavefront and reconstruct the detected one.

Noll建议的Zernike多项式表征经大气扰动的入瞳处的光学波前畸变；求出由两个离焦面上的光强分布决定的归一化Zernike项在特定形状的探测器上的响应矩阵；由响应矩阵和入瞳处的波前在两个离焦面上的光强分布，求出其Zernike项的系数，从而实现波前的探测和重构。

According to the contrast analysis of floor panel irradiance heating and radiator heating , this paper states the characterizes and feasibility of floor panel irradiance heating.

本文通过对地板辐射采暖与散热器采暖的对比分析，阐明了地板辐射来暖的可行性。

Under consecutive irradiance and 14 h / 10 h light-darkness cycle, the effects of different gradients of irradiance on seed germination of Shorea wantianshuea, an endangered and rare species of dipterocarpaceae in Xishuangbanna, Yunnan Province, were studied. Also, the effects of different temperatures on seed germination and storage were examined. Neither consecutive irradiance treatments nor periodic ones could improve the germination percentage.

在实验室内人工气候箱控制的条件下，研究了我国重要珍稀濒危植物望天树 Shorea wantianshuea，龙脑香科(Dipterocarpaceae 种子萌发对持续光照、14小时光照/ 10小时黑暗周期性光照的反应；同时研究了望天树种子的萌发对不同温度的反应和低温贮藏对种子活力的影响。

Five bryophytes (Rhytidium rugosum, Rhytidiadelphus triquetrus, Hylocomium splendens, Hylocomium pyrenathum, and Polytrichum alpiunm) were exposed to 0.2 KJ?m^(-2)?d^(-1)(visible light under native condition, CK), 3.0 kJ?m^(-2)?d^(-1)(simulated dose of UV-B irradiance at the tundra in Changbai Mountains, medium dose of UV-B irradiance, T1), and 6.0 kJ?

对生长在中国长白山的5种藓类植物―垂枝藓、拟垂枝藓、塔藓、星塔藓和高山金发藓分别以辐射强度为0.2、3.0和6.0kJ？

The study on the photoinhibiton of Pistachio shows: the exposure of Pistacia vera seedlings to high irradiance induced lowering of apparent quantum yield , maximal fluorescence , minimal fluorescence , variable fluorescence , photochemical efficiency of PS Ⅱ, and photochemical quenching , but raising the Non-photochemical quenching , this indicates that high irradiance reduces the quantities of oxidized Q〓, which depresses the ability of electron transport from Q〓 to Q〓, and lowers the electron transport rate and the photosynthesis rate.

对&光抑制&研究表明，强光照射后，叶片表观量子效率、最大荧光、初始荧光、可变荧光、光化学效率、和光化学猝灭系数下降，而qN升高，说明强光处理降低了Q〓的氧化态数量，使Q〓→Q〓传递电子的能力下降，进而导致了电子传递速率和光合速率的下降。

Initially, one specimen is tested at an irradiance of 25kW/m in the presence of a pilot flame and one specimen is tested at an irradiance of 25kW/m in the absence of a pilot flame to determine the mode which gives the quickest rate of smoke production.

首先，把一个样品用带有引燃火焰的25KW/m 的辐射进行测试，另外再用不带引燃火焰的25KW/m 的辐射进行测试，并用此来确定最快产生烟的一种方法。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。