ECE R51《关于就噪声排放方面批准四轮及四轮以上机动车的统一规定》中方法A及方法B的差异
ECE R51《관우취조성배방방면비준사륜급사륜이상궤동차적통일규정》중방법A급방법B적차이
Differences between Measurement Method A and B of Regulation ECE R 51-Uniform provisions concering the approval of motor vehicles having at least four wheels with regards to their noise emissions
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