近年来的研究表明,肺部的器质性病变将会改变从主支气管到胸壁的声音传播频率.在临床上采用非侵入性声学技术可对肺部病变进行诊断和定段业护,本文提拍一种理论棋型来描述声音从呼吸道到脚璧之间的传导,这种声音是由于主支气管壁的运动所产生的‘它用办牛等效的声学 In recent years, studies have shown that the organic lung disease will change the frequency of sound transmission from the main bronchus to the chest wall in the clinical noninvasive acoustic technology can be used to diagnose lung disease and section of the industry, this article Take a theoretical chess piece to describe the conduction of sound from the respiratory tract to the foot wall, which is caused by the movement of the main bronchial wall. It uses the equivalent acoustics