Measurement and calculation of sound pressure level and sound power level.
声压级及声功率级的测量和计算。
Regularities of pressure on surface with sound pressure level and frequency are also given.
并给出了模型表面压力随声压级及频率变化的规律。
Regularities of pressure on surface with sound pressure level and frequency are also given.
并给出了模型表面压力随声压级及频率变化的规律。
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