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- porous acoustic absorption material 多孔性声吸收材料
- underwater acoustic absorption materials 水声吸声材料
- acoustic absorption material 声吸收材料
- 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。
- 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。
- 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
- This thesis selects hydrotalcite as selective IR absorption material by its characters of layer and ion-exchangeable. 本论文利用水滑石层状结构特点和层间离子的可交换性,将其作为选择性红外吸收材料。
- 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。
- In the air blower and the blade carrier installs air noise reduce and absorption material, the movement noise is lower than 75 decibels. 风机风箱、风刀室内安装降噪音、吸音材料,运行噪音低于75分贝。
- 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。
- The paper chooses the appropriate muffler,and experiments with the capability of sound absorption material,and designs the dustproof project. 本文通过选择合适的消声器以及吸声材料实验和防尘方案的设计。
- Commonly conventional radars can not discover the stealth target with optimized design and covered with microwave absorption material. 对于优化设计和涂有吸波材料的隐身目标一般用常规雷达无法发现。
- Scattering fields of complex target coated with anisotropic radar absorption material(ARAM) were calculated using the method of graphical electromagnetic computing. 采用图形电磁计算方法分析涂敷各向异性雷达吸波材料的简单及复杂目标的电磁散射.
- Amidoxime resin is the best uranium absorption material in the sea water due to its special structure of functional group and excellent absorption property. 偕胺肟型螯合树脂以其特殊的官能团结构、优良的吸附性能而成为从海水中提取铀的最佳材料。
- Classification for Acoustically Absorptive Materials Applied by Trowel or Spray 镘刀抹涂或喷涂用的吸音材料的分类
- Finally, the future of noise active control is proposed, that is design theory and method of sound interdict strap, active sound absorption and research of new absorption material. 最后,提出噪声控制工程的未来发展方向,即:声学禁带设计理论与方法,主动吸声,新型吸声材料的研究。
- Acoustic absorption coefficient of wood 木材吸音系数
- In this paper, a new hybrid absorption method is brought forward and a new hybrid absorption system is designed which is composted of a layer absorption material and movable rigid panel. 摘要提出了一种新的半主动吸声方法,并设计了一种新的半主动吸声系统。
- 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。
- acoustic absorption characteristics 吸声特性