A special nomograph designed for calculating the normal specificacoustic impedance is proposed.
本文提出一种为计算法向声阻抗率而设计的专用列线图。
2
Applying laboratory acoustic emission Technology, in the light of specific requirements and conditions of coal mine rock sound monitor, this peper has developed a set of system for rock sound monitor.
本文介绍了应用实验室声发射测量技术结合煤矿地音监测的特殊要求和条件研制的矿山地音监测系统。
3
Experiments on the test pool and open sea have proved that this simulator could not only transmit acoustic signals like CW and LFM, but also generate ship radiated noise with specific characteristics.