The purpose is to compare and to find the relation of normal and random incidence.
目的是了解微穿孔板在随机入射场或混响场内的吸声特性与垂直入射的关系。
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.
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。
The effect of deep tube well use on the incidence of childhood diarrhoea was assessed using a random effects negative binomial regression model.
采用随机影响负二项回归模型，评估深管井的使用对儿童发生腹泻的影响。
The program consists of a statistical random sampling designed to detect a 1% incidence of violations at a confidence level of 95%.
该计划包括一个统计学上的随机采样，目的是在95%的置信程度上查出1%的违规几率。
The program consists of a statistical random sampling designed to detect a 1% incidence of violations at a confidence level of 95%.
该计划包括一个统计学上的随机采样，目的是在95%的置信程度上查出1%的违规几率。
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