声功率级 meaning in Chinese

acoustic power level
sound power level
sound powwer level

Portable chain saws . determination of sound power levels
油锯.声功率级测定方法
Brush - cutters . determination of sound power levels
割灌机.声功率级的测定
Determination of sound power level for noise emitted by gear units
齿轮装置噪声声功率级测定方法
Print a grade of survey method of power of sound of mechanical noise
印刷机.噪声声功率级测定方法
Determination of sound power level for noise emitted by leather machinery
皮革机械噪声声功率级的测定

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