The effects of the structure properties of the window upon the of sound transmission loss are also studied 同时，对双层窗结构本身性质对传声损失的影响也进行了研究。
To reduce interior noise of a passenger compartment measures are taken in the propagation route and the accepter 对于铁路客车车内降噪，主要从噪声源和传声途径两个方面采取措施。
Acoustics - laboratory measurement of the flanking transmission of airborne and impact sound between adjoining rooms - frame document 声学.邻接房间之间空气和碰撞噪音侧向传声的实验室测量.框架文献
Any one of noise pollution occurrences includes the three constituents that are a noise source , a propagation route and an accepter 任何一个噪声污染事件都是由三个要素构成：噪声源、传声途径和接收者。
Through testing on muffler on a certain motor , the paper evaluates the static performance of sound transmission loss of the muffler 通过对某种发动机使用的消声器进行测试，对消声器的静态传声损失性能作出评价。
Standard test method for impedance and absorption of acoustical materials using a tube , two microphones , and a digital frequency analysis system 管子双扩音器和数字频率分析系统用传声材料的阻抗和吸收的试验方法
What happens after the exhibition ? voicelink talked to mr . john chan , deputy director trading services for his views on the way forward 机电传声访问了副署长营运服务陈庆年先生，看看本署在举行展览后有何大计。
This production is clearly the culmination of the visionary directors work , which used the theme of trying to defeat the gun years before once upon 男主角傅声出道后，拜洪门传人刘家良为师，苦学武艺，本片即为传声真功夫演
That sounds very ambitious , can you explain how you propose to implement these " world class " services and how you will translate this philosophy into action 机电传声：很大的野心呢！在提供世界级服务方面，你有甚么建议？
It overcomes shortcomings of traditional means , does little harm to desired sounds , improves the gain prominently and is easier to be operated 自动声反馈抑制器克服了传统方法的缺点,具有操作简单、声音失真小、传声增益提高大等优点。
