声强级 meaning in English

sound inte ity level
sound intensity level
soundinte itylevel

There are also instruments known as noise meters which measure this level directly .
还有一些可以直接测出声强级的仪器，叫做噪声计。
Sound intensity and sound intensity level
声强与声强级
Acoustics - determination of sound power levels of noise sources - guidelines for the use of basic standards
声学.噪声源声强级的测定.基础标准用指南
Acoustics - determination of sound power levels of noise sources using sound pressure - comparison method in situ
声学.用声压法测定噪声源的声强级.现场对比法
Acoustics - requirements for the performance and calibration of reference sound sources for the determination of sound power levels
声学.声强级测定用基准声源的性能和校准要求

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