"OBD" means an on-board diagnostic system for emission control which shall have the capability of identifying the likely area of malfunction by means of fault codes stored in computer memory.

“车载诊断(OBD)系统”指用于排放控制的车载诊断系统，该系统具有通过储存在计算机存储器中的故障代码识别可能故障区域的功能。

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As the emission regulations are getting more and more rigorous, the importance of OBD technology in vehicle emission control is emerging.

随着排放法规的要求越来越严格，OBD技术在机动车排放控制领域的重要性日益突现。

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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；

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The researchers examined the prevailing inspection system called On-Board Diagnostics II (OBD-II), which tests for excessive carbon monoxide, hydrocarbons, and nitrogen oxides, and also checks the power-train systems for problems that might eventually lead to elevated emissions levels.

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That OBD II port that has been installed on just about every US-bound automobile since 1996?

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