The sound absorption coefficient of the material was tested by standing wave tube method.
采用驻波管法测试材料的吸声系数。
Carbon Black Pigmented Ethylene Plastic Film, Test Method for Absorption Coefficient of 08.
碳黑加色乙烯塑料薄膜的吸收系数的试验方法08。
Methods Use a standing wave tube to measure the sound absorption coefficient of many kinds of grain.
采用驻波管法测量了多种粮食的吸声系数。
It found that the graphite changed the density of the coating, and improved the sound-absorption coefficient of the coating.
试验结果表明，石墨改变了涂层的密度，提高了涂层的吸声系数。
A system for measuring the absorption coefficient of atmospheric aerosol based on the principle of integrating plate has been developed.
本文讨论了大气气溶胶吸收系数的测量，并介绍了我系根据毛玻璃屏积分法设计的测量系统。
The infrared absorption coefficient of LNO thin films is increased with increase of its thickness, and reduced with increase of the infrared wavelength.
LNO薄膜的红外吸收系数随其厚度的增加而增加，且随红外波长的增大而减小。
The average absorption coefficient of the composite structures made by partt board and wooden fiberboard can increase up to 0.868, 0.862 from 0.409, 0.306.
而通过几个参数的适当搭配，槽孔板与木丝板复合结构的平均吸声系数分别由0.409，0.306最高可提高到0.868，0.862。
The field of temperature distribution and the effect of temperature in concrete structure are directly influenced by solar absorption coefficient of concrete.
混凝土对太阳辐射的吸收率直接影响混凝土结构内温度场分布以及温度效应。
An inverse calculation method is presented for determining the equivalent gray absorption coefficient of gases under various furnace gas temperature conditions.
提出了一种反演计算不同炉气温度下非灰气体的当量吸收系数的方法。
The theoretical method for calculating the absorption coefficient of the absorber is provided by analogying the acoustic field in a tube with varying cross section.
对尖劈型吸声材料用类比变截面管道的声场理论，给出了计算其吸声系数的一种方法；
This paper deals with the threshold condition of double resonance parametric oscillation when the absorption coefficient of the signal light is different from that of the idling light.
在信号光和闲置光吸收系数不同的情况下对双谐振参量振荡阈值条件进行了分析。
In the present paper, the effects of EPR, blowing agent, plasticizer and rock-wool content on the sound absorption coefficient of the foamed materials were also studied and analysed...
还对乙丙橡胶用量、增塑剂用量、发泡剂用量和岩棉用量对材料吸声性能的影响做了研究。
Based on the principles of diffuse reflectance, the unique relationship between diffuse reflectance and transport scattering coefficient and absorption coefficient of biotissue is deduced.
本文从漫射理论出发，推导出了组织体漫反射率与约化散射系数和吸收系数之间的唯一性关系。
The spacing of Ir is probably somewhat over estimated since the values of the energy and absorption coefficient of the resonance neutron group, used in the estimation, are not very accurate.
因计算时所用共振中子之能及吸收系数不太准确，估计所得铱之间隔大概过高。
The theoretical method for calculating the absorption coefficient of the absorber is provided and the relationship between the absorption coefficient and frequencies is given by computer simulation.
文中给出了一种计算该吸声器的吸声系数的方法，并对吸声系数与频率的关系进行计算机仿真。
In the present paper, the effects of EPR, blowing agent, plasticizer and rock-wool content on the sound absorption coefficient of the foamed materials were also studied and analysed. Optimum base...
还对乙丙橡胶用量、增塑剂用量、发泡剂用量和岩棉用量对材料吸声性能的影响做了研究。
The equivalent sound absorption coefficient of the system can be calibrated by the distilled water. The accuracy of the system can be gotten by the magnesium sulfate solutions of known concentration.
利用蒸馏水标校测量系统等效的吸声系数，采用已知浓度的硫酸镁溶液来标校测量系统的测量精度。
The result shows that average absorption coefficient and noise reduction coefficient separately equal to0.58and0.60 and fine property of sound absorption at middle-low frequency.
结果表明材料的平均吸声系数和降噪系数分别达0。58和0。60，且材料的中低频吸声性能优良。
By varying the loaded heat flux and wall emmisivity, the effect of gas temperature field and wall emmisivity on the equivalent gray absorption coefficient is studied.
通过调整供入的热负荷以及炉壁黑度，研究了炉壁黑度和炉气温度变化对反演的当量灰吸收系数的影响。
It is found that the absorption coefficient and the refractive index of the composite increased with increase of carbon black content.
测量发现，随碳黑含量的增加，复合体系的吸收系数逐渐增大，并伴随折射率的相应增加。
Refractive index, chromatic dispersion and absorption coefficient are material figures of merit for ultrafast all optical switch.
折射率、色散和吸收系数是用于超高速全光开关的光学材料的重要品质指数。
The absorption spectra, exponential gain coefficient, diffraction efficiency and effect carrier concentration of the crystal were measured.
测试晶体的吸收光谱、指数增益系数、衍射效率和有效载流子浓度。
Based on the concept of activation energy and microwave absorption power density, the formula of diffusion coefficient due to the effect of microwaves is derived.
利用活化能的概念和微波吸收功率密度表达式得到微波作用下的扩散系数表达式。
The requirements of LCLV on light absorption coefficient are discussed.
分析了液晶光阀对光吸收系数的要求。
This paper discusses the phenomenon by electromagnetic theory and affirms the mathematical forms of Lambert's absorption coefficient.
作者用电磁理论对光的吸收现象进行讨论，确定朗伯吸收系数的数学形式。
The system also could decrease the effect of scattering light on absorption coefficient measurement by partly plating highly reflective membrane, so that we can improve the precision of the system.
对光管进行部分镀高反膜尽可能消除散射光对光吸收系数测量的影响，从而提高了系统的精度。
By the experiments of solidification with the UV optical fiber directly, two eigenvalues for UV photopolymer solidification, critical solidification energy and absorption coefficient were calculated.
利用光纤直接曝光固化实验，得到了紫外光固化树脂的临界固化能量和吸收系数两个特征值；
By the experiments of solidification with the UV optical fiber directly, two eigenvalues for UV photopolymer solidification, critical solidification energy and absorption coefficient were calculated.
利用光纤直接曝光固化实验，得到了紫外光固化树脂的临界固化能量和吸收系数两个特征值；
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