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This document specifies the test conditions and conditions of suspending the test,test items and methods as well as the requirements on test report of bus engineering approval.
This document applies to engineering approval tests of M2 and M3 buses.
本文件规定了客车车内噪声限值、测量仪器、测量条件、车辆条件、测量方法和试验报告。
本文件适用于M2类和M3类车辆。