汽车专业英语.pptxVIP

汽车专业英语 高职高专 ppt 课件书名：汽车专业英语ISBN： 978-7-111-37171-7作者：刘海雄出版社：机械工业出版社本书配有电子课件汽车专业英语 高职高专 ppt 课件PartⅠ Automobiles SummaryUnit 2汽车专业英语 高职高专 ppt 课件TextFigure 2-1 Automobile Exhausts汽车专业英语 高职高专 ppt 课件New Words and Phrasesmagnitude [m?gnitju:d] n. 大小，重要 nitrogen [naitr?d??n] n. 氮 hydrocarbon [haidr?ukɑ:b?n] n. 碳氢化合物accumulate [?kju:mjuleit] v. 积聚，堆积sewage [sju:id?] n. 脏水，污水dispose [disp?uz] v. 处理，处置，销毁enact [in?kt] v. 制定constituent [k?nstitju?nt] n. 成分，构成物crankcase [kr??keis] n. 曲轴箱toxic [t?ksik] a. 有毒的汽车专业英语 高职高专 ppt 课件noxious [n?k??s] a. 有害的，有毒的 lean [li:n] a. 瘦的，贫乏的fragility [fr?d?iliti] n. 脆弱，虚弱 elimination [i,liminei??n] n. 除去，消除，淘汰stringent [strind??nt] a. 迫切的，严厉的mandate [m?ndeit] v. 命令，要求carbon monoxide 一氧化碳catalytic converters 催化式排气净化器lead compounds 先导化合物汽车专业英语 高职高专 ppt 课件Notes [1] In addition, rubber (which wears away from tires), motor oil, brake fluid, and other substances accumulate on roadways and are washed into streams, with effects nearly as serious as those of untreated sewage. 此外，（从汽车轮胎上磨损下来的）橡胶、车用机油、制动液和其他物质积聚在路面上并最终被（车用机油）冲刷进河流里，并带来的严重后果不亚于未经处理的污水。 [2] To some extent this difficulty is solved by adding recycled exhaust gas the fuel mixture, thus avoiding the oversupply of oxygen that favors formation of nitrogen oxides. 从某种程度上讲，只有将废气加燃料混合气中再循环才能解决这个难题，这样可避免过度供应有助于产生氮氧化物的氧气。汽车专业英语 高职高专 ppt 课件 [3] The fragility of the catalysts used in these systems required the elimination of lead compounds previously used in gasoline to prevent engine knock. 由于这些排气装置中催化剂的不稳定性，以前加在汽油中的防震的先导化合物就必须淘汰。 [4] ... as with the elimination of lead, measures taken to control air pollution have a negative impact on fuel efficiency. ……正如先导化合物淘汰的结果一样，防止空气污染的措施对燃料使用率有负面影响。汽车专业英语 高职高专 ppt 课件ExercisesⅠ. Answer the following questions according to the text. 1. What environmental problems are due to automobile? 2. What is automobile exhaust gas made up of? 3. On what conditions will carbon monoxide be produced? 4. To control carbon monoxide and hydrocarbons in the autom