The end result should be converted to sound power level.
最终结果均应折算至声功率级。
Sometimes we use it to describe the relative power level between things.
有些时候我们用以描述不同东西的相对强度。
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。
The measure sub-element , the phase-comparator , and the power level are introduced.
对检测环节、鉴相器、功率级做了介绍；
The measure sub-element , the phase-comparator , and the power level are introduced.
对检测环节、鉴相器、功率级做了介绍；
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