1、此文档是毕业设计外文翻译成品（ 含英文原文+中文翻译） ，无需调整复杂的格 式！下载之后直接可用，方便快捷！本文价格不贵,也就几十块钱！一辈子也就 一次的事！ 外文标题：Passenger comfort on high-speed trains: effect of tunnel noise on the subjective assessment of pressure variations 外文作者：Sandra Sanok, Franco Mendolia, Martin Wittkowski, Daniel Rooney, Matthias Putzke high-speed tra
2、in; tunnel; pressure variations; sound pressure level 1.Introduction Nowadays, beside the desire to travel safe and fast, passengers expect from a journey to be comfortable (Oborne and Clarke 1973; Suzuki 1998). Whereas some authors regard comfort and discomfort as two ends of a continuum (Jacobson
3、and Richards 1976; Richards 1980; Richards, Jacobson, and Kuhlthau 1978; Shackel, Chidsey, and Shipley 1969), others state that these concepts are rather discontinuous (Helander and Zhang 1997; Zhang, Helander, and Drury 1996). According to Vink and Hallbeck (2012), comfort is a relaxed feeling of a
4、 human being due to the environment, whereas discomfort means an unpleasant state of the human body as a reaction to the physical surroundings. This last-mentioned definition of discomfort serves as the working definition hereinafter. Notwithstanding this lack of a common definition, the striving of ergonomists is to meet the desires of the passenger to avoid discomfort, stress or pain. On a high-speed train, passengers may feel discomfort due to pressure variations, especially while passi
