Therefore it is necessary to research on vehicle emission in real road condition, and this research also is the complement of the laboratory results.

因此，有必要对实际道路上车辆尾气排放进行详细的研究，这也可以作为试验室结果的补充。

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Therefore it is necessary to research on vehicle emission in real road condition, and this research also is the complement of the laboratory results.

因此，有必要对实际道路上车辆尾气排放进行详细的研究，这也可以作为试验室结果的补充。

youdao