• 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系数降噪系数分别达0。580。60,且材料的中低频性能优良

    www.websaru.com

  • The sound absorption coefficiet of osb was tested by the stationary wave method. the results showed that the osb had good sound absorption property compared with brick and concrete.

    采用驻管法测定定向结构刨花板系数,分析比较了定向结构刨花板混凝土性能差异。结果表明,定向结构刨花板具有良好性能

    www.websaru.com

  • The sound absorption coefficiency of the smooth gypsum board is small, so the room has obvious acoustic defect, that is the reverb time is too long, and the sound is muddy and so on.

    光滑石膏板系数,以此作为墙面的房间存在着明显声学缺陷即混响时间过大声音浑浊等等

    www.redlib.cn

  • Sound absorption by cavity resonance is an effective solution to solve the low-frequency anechoic problem.

    利用空腔共振时吸收解决低频吸声问题一种有效途径

    dict.cnki.net

  • Sound absorption materials is always used in controlling reverberation time in the acoustical design of studios.

    演播厅混响时间控制声学设计往往通过安装材料来实现。

    www.dictall.com

  • The results validate that the material with cavity at its back can effectively increase the sound absorption properties of materials.

    结果验证材料背后有空有效地提高材料性能

    lib.cqvip.com

  • An adaptive control approach applied to practical active sound absorption systems is presented.

    研究了实际系统中有源吸收自适应控制方案

    www.dictall.com

  • This paper derives the best range of thickness of the materials by analyzing the main factors influencing the sound absorption properties of porous metal materials.

    通过分析影响多孔金属材料性能主要因素推导材料最佳厚度范围

    lib.cqvip.com

  • Elastic mid-strength rock wool board: used for heat preservation, fireproofing and sound absorption for the building wall/roof, such as curtain wall, inner wall partition and elevator hoistway, etc.

    有弹性中等强度适用建筑墙体/屋顶保温防火幕墙内墙隔断电梯

    www.bm2088.com

  • Adding a back lining at one side of the porous metal material is an effective and workable way to improve its sound absorption properties.

    多孔金属材料一侧添加一种提高性能有效可行方法

    lib.cqvip.com

  • Its good characteristics include low cost high durability and good property of sound absorption.

    具有成本低、耐久性性能好的特点

    www.websaru.com

  • This dissertation does deep research in sound absorption performance of MR from theory and experiment aspects and indicates the sound absorption and noise reduction property of MR.

    本文研究揭示了金属橡胶材料降噪性能,对金属橡胶材料特性进行了深入理论试验研究

    dict.cnki.net

  • 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.

    混响声学专业实验室用房,它测量声波无规入射时材料吸声系数测量噪声源功率中得到了广泛应用

    www.dictall.com

  • The sound absorption properties of foamed aluminum are introduced and the effects of thickness, porosity, compression ratio, air cavity depths on sound absorption property are studied.

    介绍了泡沫特性研究泡沫厚度孔隙率压缩对其性能影响

    dict.cnki.net

  • Sound absorption and insulation is the acoustical characteristic of material. Measurement of sound absorption and insulation has an important significance in noise control and acoustical design.

    材料声学特性测量噪声控制声学设计具有重要意义

    www.fabiao.net

  • The results show that the appropriate combination of sound absorption materials and sound absorption structures can improve the sound absorption effect, and the absorption broadband is widened.

    结果表明材料结构有机结合显著提高结构效果拓宽声频带宽度

    dict.cnki.net

  • The sound absorption coefficient of the material was tested by standing wave tube method.

    采用测试材料系数

    www.dictall.com

  • The undulating roof would provide sound absorption, artificial lighting and shelter for trucks.

    起伏屋顶同时具有吸人工照明以及流动餐车提供遮蔽休息区的功能。

    www.iarch.cn

  • A novel sound absorption technology, semi-passive piezoelectric sound absorption, is presented and its performance is analyzed used electrical equivalent model in this paper.

    提出技术——半被动压电技术进行等效电路模型分析

    www.dictall.com

  • Methods Use a standing wave tube to measure the sound absorption coefficient of many kinds of grain.

    采用管法测量多种粮食系数

    danci.911cha.com

  • Now most sound absorption layers are impedance transition constructs, which have been used widely, but their thickness is limit and cannot meet the need of absorbing sound at low frequency.

    现代应用较多大部分阻抗过渡式结构但是厚度有限无法满足低频要求

    dict.cnki.net

  • The results show that the variation of static hydraulic pressure does not significantly affect the deformation and sound absorption performance of the structure with compound cavum.

    应用有限元方法计算压力变化下几种橡胶结构形变性能

    tech.zidian8.com

  • In the noise control, it can be used in sound absorption and noise reduction in the room.

    噪声控制用于室内降噪以及通风空调系统动力设备排气管中的管道消声等。

    www.boshuo.net

  • In order increase the environmental quality, air -humidifying equipment should be fixed to the large stores, sound insulation equipment and sound absorption equipment as well.

    结论:商场内应增设空气加湿器设备提高商场内的环境质量

    lib.cqvip.com

  • To a certain extent, the finer fiber fineness, the better sound absorption, and doesn't effect obviously on the sound insulation.

    纤维度变,可在一定程度上提高材料吸效果材料影响明显

    www.fabiao.net

  • XPE foams exhibit exhibit excellent insulating qualities, sound absorption. and excellent resistance to chemicals and weather.

    XPE具有优良的保温音、化学气候性能

    www.bz68.com

  • To increase the thickness of material could improve the sound absorption property.

    通过增加材料厚度也可使性能有较大提高

    www.caesv.cn

  • In applied acoustics field, the sound absorption measurement of an acoustic material and structure is always an important and basic task.

    应用声学领域声学材料结构测量始终一项重要工作

    www.dictall.com

  • In applied acoustics field, the sound absorption measurement of an acoustic material and structure is always an important and basic task.

    应用声学领域声学材料结构测量始终一项重要工作

    www.dictall.com

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