The author describes diagnostic principles of the OBD(On Board Diagnostic)system for sensors, ECU, actuators and SWS(Smart Wiring System).
阐述车载自诊断系统对传感器、电控单元、执行器和多路传输系统的诊断原理；
Engineering testing technique is mainly about the fundamental principles of testing, the analysis and process of signals, sensors types, features of testing system and modern testing techniques.
《工程测试技术》这门课程主要讲了测试的基本原理、信号的分析和信号处理、传感器类型，测试系统的特性以及现代测试技术。
Its design idea and basic principles of the sensors and their application to environmental analysis were also discussed.
讨论了这些传感器的设计思想和基本原理，以及它们在环境分析中的应用。
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