A kind of testing system which test textile is developed, it has low cost and easy to carry out, sound proof property of woven fabrics was tested by this system. 用自开发的一种针对纺织品的隔声性能测试系统,对机织物的隔声性能进行了测试。
Research and experimental analysis of sound insulation property for aluminum foam sandwich panels 泡沫铝三明治板隔声性能实验分析与研究
The effect of some factors on the sound absorbing property, such as type of aggregate, water to cement ratio and size of aggregate particles, was investigated experimentally. 试验分析不同骨料、水灰比、骨料颗粒粒径对吸声性能的影响。结果表明,这些因素对其吸声性能影响明显。
To test solidification characteristics of various casting alloy accurately is very significant for optimizing casting technique and getting castings with sound property and appropriate dimensions. 精确测定不同铸造合金的凝固特性对于优化铸造工艺、获得满足性能和尺寸要求的铸件具有十分重要的意义。
It is often misjudged the flaw echo in ultrasonic examination that the echo signals produced by sound field property and geometrical shape of the component examined according to sound field theory. 超声探伤中,由于声场特性、件几何形状的影响,所产生的各种回波信号常常被误判为缺陷信号。
This article presents the experimental results concerning the effects of four types of covering layers on the sound absorptive property of a fiber glass board. 本文通过试验探讨了四种覆面展对玻璃棉板吸声性能的影响。
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. 介绍了泡沫铝的吸声特性,研究了泡沫铝的厚度、孔隙率、压缩率、空腔对其吸声性能的影响。
Finite Element Analysis of Sound Insulation Property of Railway Passenger Car Floor “管材排列,隔离板”铁路客车地板材料隔声性能有限元分析
This research provided a new technique that two procedure foaming technique to produce composite Polyurethane foam, and made a research on its sound absorption property. 采用二次发泡工艺制备出一种声学性能优良的聚氨酯多层复合泡沫吸声材料,并对其吸声性能进行了研究分析。
It has excellent air tightness, water tightness, heat insulation, winter proofing and sound insulting property as the frame adopts the inside high and outside low design. 门框采用里高外低设计,气密性、水密性、隔热、防寒、隔音性能优越。
The gradation of sound absorption property for absorbent products GB/T16731-1997建筑吸声产品的吸声性能分级
Save the item's sound property to disk. 将该项目的声音属性保存到磁盘。
Study on Testing of Textile Material Sound Insulation Property 纺织材料隔音性能测试研究
The sound insulation property of aluminum foam ( Al-foam) with composite structure was studied using a self-made equipment and sound detector. 采用自制的试验装置对泡沫铝与实体铝复合结构的隔声性能作了研究。
Woven fabrics have sound proof property, weaving high density multi-layer fabric can get good sound proof property. 结果表明机织物具有的隔声性能以高密度多层结构织物的隔声效果最好。
Influence of Compressive Ratio and Density on Sound Absorbing Property of Foamed Aluminum 压缩率和密度对泡沫铝吸声性能的影响
Study on the Sound Absorption Property of the Modified PP Absorber 改性PP基吸声体吸声性能的研究
Study on Sound Absorbent Property of Porous Aluminum Alloy 多孔铝合金材料吸声性能的研究
Air Sound Absorption Property of Porous Aluminum 孔结构对多孔铝空气声吸收性能的影响
The porous aluminum alloy is a new type of metal material. Two production methods on casting porous aluminum alloy are introduced with the related analysis on the influence of pore size and porosity to sound absorbing property, and the application in absorbing sound and decreasing vibration. 多孔铝是一种新型的多用途金属材料,本文介绍了铸造多孔铝合金两种常用的制备方法,分析了孔径和孔隙率对吸声性能的影响及多孔铝合金在吸声、减震方面的应用。
The testing and analysis of sound proof property of woven fabrics 机织物隔声性能的测试与分析
Study on the Sound Absorption Property of OSB 定向结构刨花板吸声性能的研究
Sound Insulation Property of Aluminum Foam with Composite Structure 复合结构泡沫铝隔声性能的研究
The sound absorption property of aluminum foam was studied and analyzed by testing its sound absorption coefficients. 本文通过测试泡沫铝的吸声系数来研究泡沫铝的吸声性能。
The air sound absorption property of porous aluminum was studied. 对多孔铝的空气声吸收性能进行了研究。
Study on Sound Insulation Property of Lead Fiber/ EPVC Composite Material 铅纤维/聚氯乙烯复合材料隔声性能研究
Study on the Underwater Sound Absorption Property of the Gradient Layers of Water-soluble Polymer Coating in its Dissolving Process 高分子涂层溶解过程中梯度分层的吸声性能研究
The system G/ T value, broad-band, threshold of demodulation, video property, accompanying sound property as well as MTBF are discussed in the paper. 文中对系统G/T值、宽频带、解调门限、视频特性、伴音特性及平均无故障工作时间等六项主要技术关键进行了论述。
At present, China is establishing a sound property rights system. At the same time, we must establish a sound real estate registration institutions. 因此,我国目前在建立完善物权制度的同时,必须建立相应完善的不动产登记的法律制度。
Secondly, in our country there is not a sound property rights trading market. 其次,我国没有一个完善的产权交易市场。