汽车的振动与噪声主要来源于发动机系统和传动系统。
The vibration and noise of the automobiles mostly comes from the engine and transmission system.
在拱桥式机架上面固定有发动机、与发动机相连的传动系统；
A wheel-type travel system is fixed below the arch-bridge-type stand;
在拱桥式机架上面固定有发动机、与发动机相连的传动系统；
A wheel-type travel system is fixed below the arch-bridge-type stand;
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