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声学.利用声压的噪声源声功率级和声能级的测定.专用混响现场内小型可移动声源的工程方法.第1部分:硬质围墙试验室用对比法
Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for small movable sources in reverberant fields - Part 1: Comparison method for a hard-walled test room
参考页数：44P.;A4
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声学.使用声音压力测定噪音源声功率级与声能级.采用反射面上的包络测量面的测定方法
Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane
参考页数：56P.;A4
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声学 评价其声学性能用工作室内空间声音分布曲线的测定和特性描述
Acoustics - Measurement and parametric description of spatial sound distribution curves in workrooms for evaluation of their acoustical performance
参考页数：25P.;A4
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声学.使用声音压力测定噪音源声功率级与声能级.采用反射面上的自由声波场的工程测量法
Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane
参考页数：86P.;A4
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声学.声压法测定噪声源声功率级.混响室精密法
Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for reverberation test rooms
参考页数：68P.;A4
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声学 优选频率
Acoustics - Preferred frequencies
参考页数：3P.;A4
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声学.利用声音强度测定噪声源功率级.第3部分:扫描测量精度法
Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 3: Precision method for measurements by scanning
参考页数：34P;A4
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声学 标准调音频率(标准音调)
Acoustics; Standard tuning frequency (Standard musical pitch)
参考页数：1P.;A4
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声学 隔声罩隔声性能的测定 第1部分:实验室测量
Acoustics - Determination of sound insulation performances of enclosures - Part 1: Measurements under laboratory conditions (for declaration purposes)
参考页数：14P;A4
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声学 吸声材料 流阻的测定
Acoustics; materials for acoustical applications; determination of airflow resistance
参考页数：9P.;A4
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