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1)  sound absorption
吸音
1.
The fabricated concrete pavement, protective slope and its finished products can achieve the effects of the drainage, sliding resistance, sound absorption, noise reduction and water penetration, can improve the ground surface ecological cycles, are favorable to the driving traffic safet.
将其制成混凝土路面、护坡及其制品时,能取得排水、抗滑、吸音、降噪、渗水效果,可改善地表生态循环,利于行车交通安全,保护生活环境,解决由于大规模现代化城市建设带来的负面影响。
2.
The sound absorption coefficient of both block types is far more than 0.
从砌体材料出发,研制出一种新型砌块以消除噪声的危害,并从结构上解释2种类型(Ⅰ型和Ⅱ型)砌块的吸音原理。
2)  sound absorption
吸音,吸声
3)  sound absorbing and vibration-damping
吸音减振
4)  sound-absorbing wall
吸音墙
5)  respiratory sounds
呼吸音
1.
Envelope extraction method of respiratory sounds;
吸音信号的包络特征提取方法
2.
By analyzing the auscultation flaws of traditional heart and respiratory sounds,especially the problem caused by the occurrence of SARS,a wireless heart sounds and respiratory sounds auscultation and monitoring system was proposed.
通过分析传统心音、呼吸音听诊系统存在的问题,尤其是SARS出现后引发的问题,提出了针对传染性病人的基于蓝牙技术的无线心音、呼吸音听诊监护系统。
3.
Objective: To determine whether spectral analysis of respiratory sounds-phonopneumography is a sensitive and valid method for bronchial provocation testing.
结论:肺音图参数能灵敏地反映气道炎症所致的气道形态改变对呼吸音的产生与传导的影响,是敏感、有效的支气管激发试验监测指标。
6)  respiratory sound
呼吸音
1.
Visual Heart Sounds and Respiratory Sounds Electronic Auscultation System;
心音呼吸音可视电子听诊系统
2.
METHODS The respiratory sounds from 24 male smokers (aged 38~60 yrs) with the habit more than twenty years were monitored and analyzed by a computer analysis for frequency spectrogram, on the basis of the analysis of 294 normal non-smokers.
用附微型传感器的探头听诊器监测呼吸音并采样,经自编程序的微机频谱分析仪进行分析。
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性质:声波通过媒质或遇到物质表面时,声能降低的过程。吸音一般用吸声系数来表征,测试材料吸音的方法有混响室法和声阻抗管法。前者多用于工程上,后者多用于实验室测试研究。通过混响室测出的吸声系数a5,按下式计算: 式中,V为混响室体积,m3;S为试样面积,m2;C为空气中声速,m/s;T60-1,T60-2分别为空室和放入试样后混响室的混响时间,s。

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