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- 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。
- The sound absorption coefficient of three kinds OSB wallboard were tested by the stationary wave method. 采用驻波管法测定了3种定向结构板(OSB)复合墙体的吸声系数;
- Numerical and emulational results of sound absorption coefficient from some typical structures are presented. 给出了一些典型结构的吸声系数的仿真结果。
- As for acoustical property, the property of SRA is closer to rigid, so the sound absorption coefficient is lower under the same pavement type. 在音学性质方面,SRA因性质偏向刚性,故在相同铺面型式下系其吸音系数较低。
- Moreover, the sound absorption coefficient of prepared specimens with 0.4% gas former is greater that that of both specimens with 0.3% and 0.5% gas former. 引气剂用量为0.;4%25时平均吸声系数比0
- To measure the sound absorption coefficient in the reverberation room, theoretically it needs the room sound field spreading evenly, but in fact it's not. 摘要混响法测定吸声系数理论上要求室内声场扩散均匀,但实际的声场扩散并非理想;
- These are not really loads but indicate surfaces that absorb sound. Specify the degree of sound absorption as the material property MU (boundary admittance or absorption coefficient). 也就是说它的作用是使得边界吸声材料的吸声特性得以发挥。如果是0,就是不发生吸声现象。相反,是1,就是说明是吸声材料的吸声特性完全发挥。
- Reverberation room is the special test room that is used in acoustics, in the measurement of sound absorption coefficient in random incidence and determination of sound power levels of noise sources, the reverberation room is used very extensively. 摘要混响室是声学专业的实验室用房,它在测量声波无规入射时材料的吸声系数和测量噪声源的声功率级中得到了广泛应用。
- The result shows that average absorption coefficient and noise reduction coefficient separately equal to 0.58 and 0.60, 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
- Have set up the relation equation of porosity pervious concrete and its average sound absorption coefficient . This equation can evaluate the sound-absorbing ability of different porosity pervious concrete pavement. 经过对不同孔隙率透水性混凝土吸声系数的研究,建立了透水性混凝土孔隙率与平均吸声系数的关系方程,该方程可用于评估透水性混凝土铺装吸声降噪能力。
- The sound absorption coefficient of OSB was tested by the stationary wave method. The results showed that the OSB had good sound obsorption property compared with brick fand concrete. 采用驻波管法测定定向结构刨花板的吸声系数,分析比较了定向结构刨花板与砖、混凝土吸声性能的差异。结果表明,定向结构刨花板具有良好的吸声性能。
- Preliminary study on applications of vector hydrophone in underwater sound absorption coefficient measurement[A]Proceedings of 6th International Symposium on Test and Measurement(Volume 3)[C], 2005 . 尚建华;张明敏.;柱面波分解测量反射系数的一些分析[A]中国声学学会2007年青年学术会议论文集(上)[C];2007
- Report on the Determination of Sound Absorption Coefficients of a Renhurst Rippletone Ceiling System in a Reverberation Room. 怡谱佳吊顶声学混响室法吸音系数报告。
- average sound absorption coefficient 平均吸声系数,平均吸声率
- normal incidence sound absorption coefficient 垂直入射吸声系数
- The gradient polyurethanes with polyurethanes/inorganic fillers were prepared and their underwater sound absorption coefficients were measured in sound tube. 制备了由聚氨酯/无机填料组成的梯度聚氨酯,并在声管中测试其水声吸声系数。
- A three-dimensional transfer matrix model was presented to simulate the sound absorption coefficients of the graded polyurethanes based on relation of stress and strain of polymers. 根据高分子材料中三维应力应变关系建立了三维传递矩阵数学模型,模拟梯度聚氨酯在不同入射角下的吸声性能。
- Optimization on the Sound Absorption Coefficient of Polymers 高分子材料吸声系数优化
- Studies on Sound Absorption Coefficient on Polymer Damping Materials 聚合物阻尼材料的吸音系数研究
- Transfer Function Method of Sound Absorption Coefficient in Impedance Tubes 阻抗管中吸声系数的传递函数测量法