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辐射的热

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It is shown by the results of the test in the low temperature condition, that the efficiency of the flat-plate solar collector is mainly depended on the absorptance of the collector coating.

国外太阳能集热器的产品,不少已采用选择性涂层,这种涂层对波长0.3一2.5微米的太阳辐射能的吸收率a甚高,而对波长2.5一40微米的热辐射,其发射率只却很低。

The theory about dielectric bolometer mode of BST was introduced, and the equation about pyroelectric coefficient of BST under dielectric bolometer mode was deduced, according to which computer-aided system for measuring BST ceramics'pyroelectric coefficient was manufacture.

本文介绍了关于BST介电探测模式的相关理论,在此基础上得出介电热辐射模式下的热释电系数公式,并依此原理,研制了测量BST热释电系数的计算机测试系统。

A positive correlation was found between the solar activity and NO3- concentration in recent 1500 years. A long-standing issue of the nature of the solar activity during the Maunder Minimum was solved. An about 36a cycle was found in the solar activity. Low solar activity and weak geomagnetic field were responsible for the 36Cl peak at about 37ka BP. Climate change recorded in this ice core lagged insolation about 4ka during the last glacial maximum, about 1ka during the last deglaciation, and nearly 0ka during the Holocene.δ18O record also suggests that the variation in temperature on the Tibetan Plateau had some similar features to that in both Northern and Southern Hemispheres during the last deglaciation to some extent, which indicate that the tropics maybe play an important role on global climate change.

揭示出近1500a来古里雅冰芯中NO3-浓度变化可以反映太阳活动的强弱变化;回答了长期争议的并直接关系到太阳发电机理论是否正确的Maunder极小期太阳活动特征问题;发现太阳活动可能存在36a左右的周期;证实了37kaBP左右古里雅冰芯记录中宇宙成因同位素36Cl含量峰值的存在,指出这一时期的宇宙成因同位素峰值事件具有全球性,弱的太阳活动和弱的地磁场是这一事件发生的原因所在;揭示出古里雅冰芯记录到的"8.2ka BP事件",认为这一全球性事件发生的主要原因与弱的热盐环流和弱的太阳活动有关;发现古里雅冰芯记录的末次冰盛期和末次冰消期气候变化均在一定程度上滞后于太阳辐射变化,而全新世气候变化大致与太阳辐射变化同步;发现末次冰消期高原地区气候变化不仅具有北半球气候变化的某些特征,同时还具有南半球气候变化的某些特征,这说明热带地区可能对全球气候存在重要的影响。

The result of frequency response analysis shows that when the modulation frequency of incident radiation increases, the phenomenon that the response of detector lagging behind the variation of radiation becomes evident, the temperature variation range in pyroelectric thin film decreases, but the variation velocity increases, so the current resulting from pyroelectric effect increases.

频率响应分析表明:随着入射辐射调制频率的增大,可以观察到探测器响应的滞后现象越来越明显,热释电薄膜中的温度变化范围减小,但变化速率增大,因此探测器的热释电电流增大。

The cause of the heat-wave during the drought is the intensified Rossby wave over the Eurasia continent,which results in a closed warm anticyclone over the drought area,then an adiabatic warming is caused by the strong sinking motion.

华北地区夏季热浪天气的成因:(1)夏季欧亚大陆Rossby长定波波列的维持并发展,使得干旱区域上空出现闭合暖性高压系统,其强烈下沉运动引起空气绝热增温(2)局地干旱维持与发展使得干旱区内潜热大大降低,近地面感热以及向上长波辐射的增加使得干旱区域气温持续升高。

To make clear the mechanism of thermally induced vibration s is the base of understanding thermally induced vibration s failure.

空间结构在辐射换热条件下的热诱发振动是导致空间结构失效的一种典型模式。

Based on the heat balance equation of the vegetation canopy layer and the assumption that its short wavelength absorptance, long wavelength emissivity, heat or moisture transfer coefficient, and bulk stomatal resistance are random, uncorrelated variables with normal distribution densities, the theoretical modeling for IR radiance statistics of vegetation canopy surface is presented by Monte Carlo simulation, with the surface radiative temperature statistical distribution given.

根据植被层能量热平衡方程,选取植被短波吸收率、长波发射率、热与水汽传输系数和气孔阻力为独立的随机变量,并假设它们均服从正态分布,利用Monte-Carlo方法,模拟计算了植被表面红外辐射的统计特性。

Nature the whole temperatureses are high in the object of absolute zero(-273.15 ° Cs), because of molecular hot sport, all at without intermission to surroundings the space radiation include a red and outside wave band at inside of electromagnetic wave, the temperature relation between its radiation energy density and object matches the gram of Plank laws.

红外温度检测系统自然界一切温度高于绝对零度(-273.15°C)的物体,由于分子的热运动,都在不停地向周围空间辐射包括红外波段在内的电磁波,其辐射能量密度与物体本身的温度关系符合普朗克定律。

When infrared ray irradiates to the surface of material and radiating frequency is same as material molecular frequency, the radiating energy is strongly absorbed by the material.

红外辐射是辐射物体以电磁波的方式传播内能的过程,当红外线照射到某一物体时,如果入射的红外线频率和物体分子固有频率相一致,则物质分子就会表现出对红外线的强烈吸收,吸收的那一部分能量就转化为分子的热运动,使物体温度升高,达到加热干燥的目的。

The difference in temperature of the surface of the sample will be produced when the sample is immitted continuous heat, for the different configuration in the sample. The damage is detected by the temperature of the surface obtained by Infrared detector. It names Infrared Thermography. It is a nondestructive, non-contact and real-time technique, and has important status in nondestructive damage evaluation.

红外热像技术是把连续热流注入试件表面,热流向试件内部扩散情况与试件内部材料情况有关,并随时间推移使试件表面产生温差,再依据被测物连续辐射红外线的物理现象,采用红外摄像电子分析仪器与计算机处理器摄取红外线辐射的强弱程度,并转换为被测范围内的温度场分布的图像,借以直观的识别与判定试件近表面的缺陷情况。

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The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。

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为了做成这笔生意,我建议我们在价格上大家各让一半。

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