The variation relations between seepage pressure change, seepage pressure coefficient, and water level of the reservoir are analyzed in detail.

详细分析坝基渗压系数变化，渗压系数与库水位关系。

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Finally figures of direction coefficient of sound pressure level are given out. Then using these figures the relationship between sound power level and sound pressure level radiated by a fan in...

利用这些图就可方便地得到吸气管道内风机辐射声功率级和声压级的关系。

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Finally figures of direction coefficient of sound pressure level are given out. Then using these figures the relationship between sound power level and sound pressure level radiated by a fan in...

利用这些图就可方便地得到吸气管道内风机辐射声功率级和声压级的关系。

youdao