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比辐射率是辐射度学中的重要参量。Emissivity is an important parameter in radiometry.

这是引用对象的辐射率值。This is the emissivity value of the reference object.

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隐身纤维的最低红外发射率可达0.60。The lowest infrared emissivity of the fiber can reach 0.60.

提出了一种新的测量发射率的方法。A new method of measuring target wideband emissivity is presented.

这可能是由于胶片上的网点不具有足够的黑度。This may be due to the film world does not have sufficient surface emissivity.

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

不管神马颜色，大多数涂料的红外放射系数都在0.9左右。The emissivity for most paints is about 0.9 regardless of colour, in the infra-red region.

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

要满足夜间热红外伪装的要求，中间色斑块的发射率不小于0.83。But it requests emissivity larger than 0.83 to fulfill the camouflage efficiency in nighttime.

经实验验证这是一种有效的发射率测量方法。By experiment, we proved that it is one of efficient method for spectral emissivity measurement.

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

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

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在热红外方面，红外发射率差异是地表复杂性的表现之一。As-for the thermal infrared band, the thermal emissivity is the major factor of surface complexity.

介绍高发射率涂料对耐火纤维的强化作用。The strengthening effect of high emissivity coating on refractory fibre is described in this paper.

稳态量热计法测得涂层半球向发射率为0.92。By balanced-state heat meter measurement, the hemispherical radiant emissivity of coatings was 0.92.

同时也发现，它的发射率峰值有时在远离法线的区域。It also shows that the peak value of the emissivity is sometimes far away from the normal direction.

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

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结果表明，基板选择和薄膜厚度是影响发射率的重要因素。It showed that the nature of substrate and the thickness of the film were important to the emissivity.

分析了低辐射薄膜防止可视冰柜门玻璃表面结露的性能并进行了实验研究。Low emissivity film coated on the glass can considerable reduce dewing of the glass door of a freezer.

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