"anechoic" CNS Standards Search Result |
CNS 14657
- English Version Acoustics - Determination of sound power levels of noise sources - Precision methods for anechoic and semi-anechoic rooms 聲學─測定噪音源聲功率位準的精密級方法─用於無響室和半無響室 - 英文版 |
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CNS 14657
- English Version Acoustics - Determination of sound power levels of noise sources - Precision methods for anechoic and semi-anechoic rooms 聲學-測定噪音源聲功率位準的精密級方法-用於無響室和半無響室 - 英文版 |
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