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我对V型皮带传动的50型车做了一些改进,使其与有挡位的车一样能空挡滑行。经改进后的50型车可节油30％左右。 我原有的50型车在行驶中无
I made some improvements to the V-belt drive model 50 so that it can slide in the neutral position just as it does with the gear. The improved 50 car can save about 30%. My original 50 car was driving