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emissivity

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emissivity是什么意思
英式音标:[ˌemɪ'sɪvɪtɪ]
美式音标:[ˌemə'sɪvətɪ]
词义:

n.

发射率;放射性;

英英释义

Emissivity

The emissivity of a material (usually written ε or e) is the relative ability of its surface to emit energy by radiation. It is the ratio of energy radiated by a particular material to energy radiated by a black body at the same temperature.

以上来源于:Wikipedia

用法:

词组短语

surface emissivity表面发射率,表面发射系数

权威例句

Particle emissivity in circumstellar disks

Emissivity of terrestrial materials in the 8-14 micrometer atmospheric window.

Directional Reflectance and Emissivity of an Opaque Surface

Emissivity of pure and sea waters for the model sea surface in the infrared window regions

Classification-based emissivity for land surface temperature measurement from space

A Comparative Study of Land Surface Emissivity Retrieval from NOAA Data

Mapping land surface emissivity from NDVI: Application to European, African, and South American areas

A temperature and emissivity separation algorithm for Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) images

A physics-based algorithm for retrieving land-surface emissivity and temperature from EOS/MODIS data

New refinements and validation of the MODIS Land-Surface Temperature/Emissivity products
造句:

1. At a hardware store, these are labeled low-e windows, short for low emissivity.

在五金店,双层玻璃窗都贴有“低漏”(low-e)字样,“低漏”是“低热量泄漏”(lowemissivity)的缩写。

article.yeeyan.org

2. One way is to measure a cell that behaves similarly with a point and shoot emissivity temperature reader.

其中的一个方法是测量行为类似于针对某个点的单元,并记录辐射率温度读取器。

www.ibm.com

3. Smrekar’s follow-up work will include deeper analyses of the anomalies seen in the emissivity data, but she noted that such work is hampered by limited and outdated data.

斯姆雷卡尔后续的研究工作将包括更深入地分析辐射率数据中观察到的异常,不过她指出这些工作被有限的以及过时的数据限制了。

article.yeeyan.org

4. He added, however, that in order to make even more progress in determining how Venus resurfaces, scientists need to learn exactly how weathering surface rates affect emissivity.

然而,他补充道,还需要在确定金星地表如何重塑这个问题做出更多的努力,科学家需要确切地了解地表风化率如何影响辐射率。

article.yeeyan.org

5. Because calculations and lab experiments replicating the Venusian surface and atmosphere show that emissivity decreases over time, emissivity can be an important indicator of a substance’s age.

同时因为计算与实验室的实验复制的金星地表与大气层的活动,表明辐射率一直在下降,所以辐射率能够成为某个地质年代的一个重要指标。

article.yeeyan.org

6. The scientists believe that the lava flows have such a high emissivity because they are fresh — no more than 250 years to 2.5 million years old.

科学家认为熔岩流之所以具有这么高的辐射率,是因为它们是‘新鲜的’——至少不超过250年至250万年。

article.yeeyan.org

7. Key problems on energy saving of high emissivity coating at middle temperature are discussed.

本文论述高发射率涂料在中温下使用,节能的若干关键问题。

dictsearch.appspot.com

8. The influence of the thickness of thermal insulating materials, the emissivity and the fashion of thermal insulation on the insulating effect is analyzed.

数值模拟可以分析隔热结构中隔热材料厚度、表面发射率、隔热方式等因素对排气管隔热效果的影响;

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9. The ratio of specific heat has the most effect followed by emissivity of radiative object and noises.

其中烟气的比热比的影响最大,其次是辐射源的发射率和环境噪声。

danci.911cha.com

10. The camouflage efficiency compatibility in daytime and nighttime may be improved by camouflage cloth of alterable emissivity , of low solar energy absorptivity and of better convection heat exchange.

综合采用发射率可变涂料、降低太阳能吸收率、增强网面对流换热等技术手段可改善林地型伪装网与背景的昼夜兼容能力。

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11. It showed that the nature of substrate and the thickness of the film were important to the emissivity .

结果表明,基板选择和薄膜厚度是影响发射率的重要因素。

danci.911cha.org

12. By comparing the two sets of data, the scientists discovered that certain parts of the hot spots had “anomalously high” emissivity, or the ability to radiate energy.

通过比较这两套数据(麦哲伦航天器获取的数据以及VIRTIS获取的数据),科学家发现火山活跃地区的特定部分具有“异常高的”辐射率(或称辐射能量的能力)。

article.yeeyan.org

13. To reduce infrared radiation , it was necessary to confirm the ratio of specific heat, emissivity and depressing noise.

准确确定烟气比热比,辐射源的发射率以及设法降低环境噪声是提高舰船红外辐射强度的重要手段。

danci.911cha.com

14. Infrared emissivity is one nature of substance, low infrared emissivity materials have extensive applications in both civil and military field.

红外发射率是物性之一,低红外发射率材料无论是在民用还是在军事方面均有着十分广泛的用途。

dict.cnki.net

15. A kind of infrared coating on metallic substrate with a high emissivity up to 1200℃ was developed.

研制成一种涂在金属基体上,能在1200℃下工作,具有高发射率的红外涂料。

dict.cnki.net

16. The relationship between the emissivity and wavelength of the flame was linearly fitted at three points in turn and optimized by GA to obtain the temperature and the emissivities of the flame.

该方法对火焰发射率与波长的关系依次进行了三点直线拟合,并通过遗传算法进行了优化,从而得到了发光火焰的温度和发射率。

dict.cnki.net

17. Under the condition of radiative equilibrium, this paper examines the effects of surface emissivity and scattering albedo on radiative heat flux and temperature fields.

在辐射平衡的情况下,考察了表面发射率和散射反照率对介质内辐射热流和温度场的影响。

dict.cnki.net

18. The experimental results show that the above-mentioned method can solve the true temperature and spectral emissivity measurement of most engineering materials.

实验结果表明,该方法可以解决绝大多数工程材料的目标真温及光谱发射率的测量问题。

www.websaru.com

19. The use of metallised fabrics is sometimes proposed to reduce the emissivity of a fabric .

不时地有人建议采用镀有金属膜的织物以减少织物的发射率。

m.yibei.com

20. In the solar and near infrared region it is more usual to speak of absorptivity than emissivity.

在日射和近红外区段内,讨论吸收率比讨论发射率更为普遍。

www.xjishu.com

21. The specular reflection pyrometer has the advantages of decrease the influence of surface emissivity on temperature measurement, but the short continuous working duration limits its application.

镜面反射式高温计具有能减少被测表面发射率影响的优点,但它的连续工作时间短,限制了应用。

dict.cnki.net

22. Based on the local thermal equilibrium and component effective emissivity concept the radiant model of continuous vegetation has been studied.

论文基于局地热平衡条件和组分有效发射率概念探讨了连续植被的热辐射方向性模型。

dict.cnki.net

23. The main problem in radiation thermometry is how to minimize the measuring error resulting from unknown or variant surface emissivity.

辐射测温的主要问题是解决未知的或变化的表面发射率所引起的误差测量。

dict.cnki.net

24. With increase of the ITO film surface resistivity, the infrared emissivity of the material increases first, then tends to a certain value.

结果表明,材料的红外发射率随ITO膜表面电阻率的增加先增加,后趋于一定值。

www.ceps.com.tw

25. A new method called rectangular-region approximation is developed to calculate the effective emissivity distribution in blackbody cavity.

文中提出一种计算黑体空腔有效发射率分布的新方法——矩形区域近似法。

dict.cnki.net

26. Based on single channel double colour principle, it overcomes the interference of emissivity of object surface and other factors on temperature measuring precision.

用单通道实现比色成像,可明显地降低物体表面发射率及其它因素对测温精度的影响。

dict.cnki.net

27. Temperature and surface emissivity are the two factors that determine the IR radiant intensity of an object.

影响目标红外辐射亮度有两个因素:表面温度和发射率。

dict.cnki.net

28. As-for the thermal infrared band, the thermal emissivity is the major factor of surface complexity.

在热红外方面,红外发射率差异是地表复杂性的表现之一。

dict.cnki.net

29. To avoid the problem of the emissivity of radiation, the method of local adjusting and technological control temperature is used.

它通过现场校准和工艺控制温度的方法,避开了确定辐射系数的难题。

dict.cnki.net

30. To avoid the problem of the emissivity of radiation, the method of local adjusting and technological control temperature is used.

它通过现场校准和工艺控制温度的方法,避开了确定辐射系数的难题。

dict.cnki.net

31. In the solar and near infrared region it is more usual to speak of absorptivity than emissivity.

在日射和近红外区段内,讨论吸收率比讨论发射率更为普遍。

-- 来源 -- 英汉 - 辞典例句

32. The use of metallised fabrics is sometimes proposed to reduce the emissivity of a fabric.

不时地有人建议采用镀有金属膜的织物以减少织物的发射率。

-- 来源 -- 英汉 - 辞典例句

33. At 10 um the emissivity of the sky is about 0.1, whereas for a conventional telescope it is 0.5.

在10微米处,天空的发射率约为0.1,而一架普通望远镜的发射率为0.5。

-- 来源 -- 英汉 - 辞典例句

34. cavity emissivity

空腔发射;空腔发射能力;气体容积辐射;容积辐射率

-- 来源 -- 英汉 - 翻译参考[网络]

35. surface emissivity

表面发射系数

-- 来源 -- 英汉 - 翻译参考[网络]

36. spectral emissivity

频谱发射率

-- 来源 -- 英汉 - 翻译参考[网络]

37. slin emissivity

表面发射率

-- 来源 -- 英汉 - 翻译参考[网络]

38. radiant emissivity

辐射率

-- 来源 -- 英汉 - 翻译参考[网络]

39. directional emissivity

定向发射率

-- 来源 -- 英汉 - 翻译参考[网络]

40. Reducing the surface emissivity of a clothing ensemble is not in fact a very effective way of increasing its thermal insulation.

事实上减少整套服装的表面发射率并不是增加其隔热性能的最有效途径。

-- 来源 -- 英汉 - 辞典例句

emissivity

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