车辆工程仅考虑路面不平度对车辆的激励，所以把与路面对车辆激励的各种情况均计入不平度，并按不平度对路面分级。
The vehicle engineering side only consider excitation caused roughness of road so that all of the excitation should be accounted into roughness, then road class divides according to roughness.
车辆工程仅考虑路面不平度对车辆的激励，所以把与路面对车辆激励的各种情况均计入不平度，并按不平度对路面分级。
The vehicle engineering side only consider excitation caused roughness of road so that all of the excitation should be accounted into roughness, then road class divides according to roughness.
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