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- A new type of sound absorbing materials mainly made from low alkaline cement and expanding pearlite has been investigated on the basis of sound absorption principle. 摘要以低?A水泥和膨胀珍珠岩为主要原料,辅之以分散性良好的增强剂聚丙烯纤维,研制出一种新型吸声材料。
- This compound materials used in absorbing material is with sound absorbing function and light quality, wide band, good compatibility and strong inoxidizability. 这种复合材料用于吸波材料,它不仅具备良好的吸波功能,还兼备质量轻、宽频带、兼容性好和耐腐蚀性强等优点。
- A new type of porous sound absorbing material was made from super-strength gypsum and glass fiber. 摘要以高强石膏为胶凝材料,内掺玻璃纤维,制备出一种新型多孔吸声材料。
- effective porosity of sound absorbing materials 有效空隙率
- A new cement was prepared which consisted of the composite porous sound absorbing material with portland cement, expanded perlite, ceramsite as main raw materials and some supplementary substances. 摘要以普通硅酸盐水泥、膨胀珍珠岩、陶粒主要原料,加以一定的辅助材料,研制出一种新型水泥基复合多孔吸声材料。
- 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。
- A new type of sound absorbing material was made from super-strength gypsum and glass fiber and the sound absorp-tion coefficient of the material was tested by standing wave tube method. 以高强石膏为主要原料,内掺玻璃纤维,在发泡剂的作用下,制备出一种新型多孔吸声材料,采用驻波管法测试材料的吸声系数。
- Equivalent Specific Acoustic Resistance of Sound Absorbing Materials 吸声材料的当量声阻率
- 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
- RESEARCH ON FOAMED PVC-COMPOUND SOUND ABSORBING MATERIAL 聚氯乙烯基混合吸声材料的研究
- sound absorbing materials 吸声材料
- Influence of the Structural Form of Sound Absorbing Material on the Behavior of Sound Absorption 吸声材料构造形式对吸声效果的影响
- Standard Specification for Fibrous Glass Duct Lining Insulation (Thermal and Sound Absorbing Material) 绝热和隔音材料(玻璃纤维,管道衬里材料)
- Sound Absorbent Material Made from Waste of Polished Brick 抛光砖废料制备吸音材料
- Are necessary absorbing materials available for dealing with accidental escape of oil? 双方是否备妥了必要的吸附材料,以应付以外跑油事故?
- Ferrite,a typical kind of magnetic absorbing materials,is one of the most important EMW absorbing materials. 铁氧体是目前应用最广泛的一类吸波材料,具有典型的电磁波磁损耗机理。
- Nature of the electromagnetic wave (EMW) absorbing materials is the energy conversion. 吸波材料本质上是一种能量转换材料。
- The theory, application and development of FSS in the radar absorbing materials are described in this paper. 摘要研究了频率选择表面(FSS)在雷达吸波材料中的应用,阐述了其原理和研究现状。
- A new sound absorbing foamed compound mainly made from PVC resin,EPR and rockwool has been investigated by foaming process. 以PVC树脂、EPR和岩棉为主要原材料用发泡方法制成了一种中低频吸声性能优良的新型泡沫吸声材料。
- To soak up or dry with absorbent material. 吸收,吸掉用可吸收物质吸干或吸掉