Design on orbit traffic sound control structure anddevelopment on sound absorption material;
轨道交通噪声控制结构设计及吸声材料研究
The flow of missile's engine studied, the anti-burnout capability and engineering appliance possibility of sound absorption material were validated and evaluated.
结合应用于国防工程中的某型吸声材料的研究,设计了缩比模型发动机和试验装置模型,通过仿真计算对试验方案进行了分析和确认。
A new kind of sound absorption material was obtained.
以聚氨酯泡沫组装不同高分子微粒制备出一种新型高分子微粒吸声材料。
The paper analyses the principles of sound-absorbing material,introdues its classification,characteristics,wide application and development,and also introduces the promising new environmenttal protection materials.
分析了吸声材料的吸声原理 ,介绍了它的分类、基本特点、用途及其研究发展情况。
Dynamic mechanical properties of sound-absorbing materials are measured by use of DMTA ( Dynamic Mechanical Thermal Analyzer) .
本文对谐振腔式潜艇吸声覆盖层的吸声机理进行了理论研究；采用动态粘弹谱测试仪对吸声材料参数进行了实验测试；利用宽带脉冲压缩信号测量法，对具有一定内部结构的吸声覆盖层大样进行了自由场实验测试研究。
The two-layer polyurethane foam sound-absorbing materials were produced by twice proceduce foaming technique.
采用二次发泡工艺制备了聚氨酯双层复合泡沫吸声材料,对其吸声性能进行了理论预测与实验验证,并探讨了复合方式对泡沫材料吸声性能的影响。
The straw board which is a renewable resource is used as sound absorbing material to substitute for automobile foam plastics.
通过测试发现相同厚度的稻草秸秆板平均吸声系数大于泡沫塑料,当用稻草秸秆板替代XMQ6608客车原发动机隔声罩内的泡沫塑料时,新罩的降噪效果优于原罩,试验结果证明:轻质稻草秸秆板是能用作汽车吸声材料的。
A new sound absorbing material made from polyvinyl chloride(PVC) or its blending material and inorganic material, which is good in low frequency absorption, was introduced.
将聚氯乙烯及其共混发泡材料与无机吸声材料混合 ,研制了一种新型吸声物材料 ,其平均吸声系数为 0 。
A new sound absorbing material that is good in sound absorbing at the low frequency and high frequency is made from PVC and rockwool in this paper.
利用ＰＶＣ和无机物等研制了一种性能优良的吸声材料。
Research on noise and absorbing material in drivers cab of diesel locomotive;
内燃机车司机室噪声特性及吸声材料研究
Acoustical design of Fujian swimming & diving pool gmnasium and choice of moisture-proof absorbing materials;
福建省游泳跳水馆的音质设计与防潮吸声材料的选用
The aim of the study was to quest for an appropriate absorbing material for these factory buildings.
在高温、高湿、高气流、高洁净度的工业厂房的降噪工程中 ,吸声材料的应用仍受到一定的限制。
sound - absorbing material and sound - absorbingconstruction
吸声材料和吸声结构
Performance of Sound-Absorbing Material Based on Flow Resistivity
基于流阻率的吸声材料声学性能研究
Quality Controls of Decoration Construction of Acoustic Noise Material
隔声吸声材料的装饰施工与质量控制
Structure Design and Performance Control of Gypsum-Absorbing Material;
石膏基吸声材料结构设计与性能调控
Exploration of Market Demand and Development Trend of Sound Absorption Material;
吸声材料的市场需求及发展趋势探讨
Al-Cu-based sound-absorbing materials by self-propagating high-temperature synthesis
燃烧反应合成Al-Cu基吸声材料
Discussion on System of Polyurethane Underwater Anechoic Material and Research Progress in Polyurethane Anechoic Structure
聚氨酯水声吸声材料的体系探讨及其吸声结构的研究进展
Discussion on Feasibility of Nonwoven Sound-absorbing Materials Used for Road Noise-deafening Barrier
道路声屏障用非织造布吸声材料的可行性研究
The absorbing and insulation performance of wedge absorbor and plat insulation meterial is studied by using the model of laying medium in this thesis.
该文采用分层媒质模型,对尖劈型吸声材料及平板型隔声材料的吸、隔声性能进行了仿真研究。
Preparation and Research on Acoustic Charicateristics of the Sound Abosrption Material Based on Polymer Micro-Particles as Well as Computer Simulation;
高分子微粒吸声材料的制备、吸声特性及计算机仿真研究
Influence of thickness and density on sound-absorption capability of nonwoven sound-absorbing material
厚度和容重对非织造布吸声材料吸声性能的影响
Inside wall of pump chamber is adhibited with sound absorption material, equipped with double layer sound isolation door.
水泵房等房间内壁贴吸声材料。采用双层隔音门。
Study on Two-Layer Compound Effect of Polyunethane Foam Sound-Absorbing Materials
聚氨酯泡沫体吸声材料的双层复合效应研究
Target Strength Calculation of Underwater Complicated Targets Coated with Absorbing Materials
敷设吸声材料复杂目标的目标强度计算
Measures to promote the durability of inorganic tunnel sound-absorbing material
提高隧道无机颗粒吸声材料耐久性的措施
Sensitivity Analysis of the Noise Response in Cab Lined With Sound Absorbing Materials on the Panel
壁面有吸声材料时驾驶室内噪声响应的灵敏度分析
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。
Damping Properties and Acoustic Properties of Nano-elastomer Materials;
纳米材料高弹体的阻尼吸声性能研究
