...到国III排放标准的车辆一是可大幅度削减单车的污染物排放，排放量比国II标准车辆减少50%以上；二是可以加装车载排放诊断系统(OBD)，OBD系统是监测机动车与排放有关的零部件是否正常工作，并及时对故障发出警报的环保专用装置。
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SCR技术通过车载诊断系统(OBD)，可以对汽车的排放进行实时监控，及时地显示故障信息，以确保系统的正常运转。
SCR technology through the vehicle diagnostic system (OBD), vehicle emissions can be monitored in real time, display fault information in a timely manner to ensure the normal operation of the system.
“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。
"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.
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