1·The ae sensor calibration system based on pulsed surface wave sound field was built several commercial and self-made ae sensors had been calibrated on it.
建立了基于脉冲表面波声场的声发射传感器标定系统,对商用和自制的几种声发射传感器进行了标定。
2·The complex sound field distribution of the focused transducers was calculated by the coordinate transform method, and the acoustic power was measured.
该文应用坐标变换法对该聚焦换能器的复杂声场分布进行了数值计算,并测定了其声功率。
3·The main contents include: 1 the flow field and sound field were simulated with CFD software for the indoor unit of the air conditioner.
主要研究内容包括:1利用CFD软件对挂壁式空调器室内机进行流场和声场模拟。
4·The radiated sound field of ring plunger is analyzed.
研究了环状活塞声源辐射声场的特性。
5·The results showed that using the physical simulation experiment to investigate and assess rail noise was effective and reliable, especially for the distribution of sound field in the building.
研究结果表明,采用物理模拟实验方法研究、评价铁路噪声,尤其是建筑群中的声场分布是可行和可靠的。