阻抗率 meaning in English

unit area impedance

Unit area acoustic impedance
声阻抗率
Specific acoustic impedance
声阻抗率
Code for measurement of sound - absorbing coefficient and specific acoustic inpedance of standing - wave
驻波管法吸声系数与声阻抗率测量规范
Measurement of sound - absorbing coefficient and sound - resistance rate by method of standing wave tubes
驻波管法吸声系数与声阻抗率测量规范
To provide a method that can be used to predict single or multi - layered microperforated panel ( mpp ) performance precisely , especially when the mpp has holes of different diameter and irregular shape
摘要提出用实验测得含不同孔径孔的微孔板声阻抗率来预测由其形成的单层或多层微孔板的吸声特性，并用传递矩阵法来预测该微孔板的各种组合结构的整体吸声性能。