The V belt wheels of noise experimental table of maincarriage reduction gear must suit drive ratio, be lightest in weight and least in moment of inertia .
为降低轿车主减速器噪声测试试验台本底噪声，其传动系统采用了四对三角胶带传动。
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Main Street USA is based on typical American town designed and full of nostalgic colors, the show is the era of gas lamps are replaced by the lamp, as well as the age of car instead of carriage.
It discusses in 4 parts of the employer's liability of carriage by sea: the basic theory, basic relationship, main problems and the development tendency.