大家好，我是小典，我来为大家解答以上问题。论文英文摘要格式，论文英文摘要很多人还不知道，现在让我们一起来看看吧！
1、好难啊~好难啊~~感叹一下……不过还是比中国古诗词的那种中英翻译好多了。
2、变速器是汽车传动系统中最主要的部件之一，它是通过改变传动比来改变发动机曲轴的转矩和转速，以满足汽车在起步、倒车，变速行驶等行驶条件下所需的驱动车轮牵引力大小，行驶方向及不同车速的需要。
3、Transmission is one of the most important parts in vehicle transmission system. It changes the torque and the speed of the engine crankshaft via changing the transmission ratio so that it can meet the demand on the traction, driving direction and driving speed required by different driving conditions such as starting, reverse and variable velocity.
4、它的好坏直接影响了发动机动力的平稳输出和汽车的正常启动，以及汽车在各种路况下能否够顺利换挡满足所需行驶条件。
5、Whether the transmission is good or not will directly have an impact on engine’s stable output and the start of the vehicle. And it will also influence whether the car can shift to meet the driving conditions under all kinds of situations.
6、本文主要研究AL4型4速电子控制自动变速器，通过对其结构构原理的了解，来针对几种常见故障，进行分析和解决,对往后AL4电控型自动变速器的使用和汽车维护具有很现实的意义。
7、This article will mainly discuss about the AL4 four-speed electric automatic control transmission. It will make analysis and provide solution for the common errors by analyzing its structure. It will be significant for the use of AL4 electric automatic control transmission and vehicle maintenance.
8、关键字：AL4 电控 自动变速器 故障分析
9、Key words: AL4, electric control, automatic transmission, error analysis
本文到此讲解完毕了，希望对大家有帮助。