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声学 办公室和车间内声屏障控制噪声的指南
Acoustics.Guidelines for noise control in offices and workrooms by means of acoustical screens
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声学 风道末端装置、末端单元、风道闸门和阀噪声声功率级的混响室测定
Acoustics.Determination of sound power levels of noise from air-terminal devices,air-terminal units,dampers and valves by measurement in a reverberation room
价格：￥0.00
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声学.消声器噪声控制指南
Acoustics.Guidelines for noise control by silencers
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声学 可移动屏障声衰减的现场测量
Acoustics-Measurement of the in situ sound attenuation of a removable screen
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声学 隔声罩和隔声间噪声控制指南
Acoustics-Guidelines for noise control by enclosures and cabins
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声学 隔声间的隔声性能测定 实验室和现场测量
Acoustics-Determination of sound insulation performance of cabins-laborartory and in situ measurements
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声学 各种户外声屏障插入损失的现场测定
Acoustics-In-situ determination of insertion loss of outdoor noise barriers of all types
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声学 高强度聚焦超声(HIFU)声功率和声场特性的测量
Acoustics-High intensity focused ultrasound(HIFU)measurements of acoustic power and field characteristics
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声学.道路表面对交通噪声影响的测量.第1部分:统计通过法
Acoustic.Measurement of the influence of road surface on traffic noise.Part 1: Statistical Pass-By method
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社会生活环境噪声排放标准
Emission standard for community noise
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