random incidence meaning in English

漫射
无规入射

Electroacoustics - random incidence and diffuse field calibration of sound level meters
电声学.声级测量仪的随机入射和散射区域的校正
Reverberation room is the special test room that is used in acoustics , in the measurement of sound absorption coefficient in random incidence and determination of sound power levels of noise sources , the reverberation room is used very extensively
摘要混响室是声学专业的实验室用房，它在测量声波无规入射时材料的吸声系数和测量噪声源的声功率级中得到了广泛应用。