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- The sound absorptivity of Low Resilience PU Foam was discussed,and got the influencing degree of each influencing factor to its acoustical absorptivity. 对慢回弹聚氨酯泡沫的吸声性能进行了探讨,分析出各影响因素对其吸声性能的影响程度。
- The results showed that with increasing the PMN content, the piezoelectric constant, dielectric constant and acoustic absorptivity of the composite increase. 结果表明,随着压电陶瓷体积用量的增加,材料的压电常数、介电常数和吸声系数均增大。
- Based on the viscosity acoustic absorption theory, Rock material is natural low-pass filter of acoustical wave. 摘要声波在岩石材料中传播时会发生差异衰减现象。
- acoustical absorption coefficient 声吸收系数
- acoustic absorptivity measurement 吸声测量
- acoustical absorptivity 吸声系数,声吸收率
- A unit of acoustic absorption equivalent to the absorption by one square foot of a surface that absorbs all incident sound. 赛(宾):吸声计算单位,等于一平方英寸的表面所吸收的全部外来声音的吸收量
- Automatic Cargo Identification Acoustic absorptivity, 自动货物辨识
- Adopt the classics acoustic absorption theory that Rayleigh founds, establishing acoustic absorption theory model by the orderliness that the change sound impedance. 采用瑞利创立的经典吸声理论,通过声阻抗率的变化规律建立圆管吸声理论模型。
- This system can set up acoustical resonances. 这种系统能产生共鸣。
- NINGBO APPLE ACOUSTICAL EQUIPMENT CO., LTD. 宁波苹果音响器材有限公司。
- Work out their content by unit absorptivity. 再利用单位吸光系数换算其含量。
- The noise-deadening property was also analyzed and pointed that it was a new composite material which has much high performance such as excellent noise-deadening and acoustic absorption etc. 选择聚丙烯为纤维原料采用纺丝成网法制成吸声非织造布,以铜、铁粉末为主要隔声材料采用挤出成型工艺制成隔声片材,经化学粘合复合工艺研制出非织造降噪复合材料。
- A beam ethereal, sullied, and absorpt! 在虚无与神圣的中间!
- Keywords highway;bituminous pavement;acoustic absorpt;noise reducing; 关键词道路;沥青路面;吸音;降噪;
- A reverb unit simulates the sound of different acoustical areas. 混响单元是模拟不同声学空间中的声音。
- Acoustical liberation of books in the public domain. 意思是公共领域书籍的听觉解放。
- How to examine acoustical immittance to measure listen to a result? 如何查看声导抗测听结果呢?
- Under the room temperature, PTMEG has the water absorptivity. 在室温下,PTMEG都具有吸水性。
- Acoustic absorption coefficient of wood 木材吸音系数