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  1. ...the market like this. 第三 dohc跟sohc差在哪? vtec的要看引擎哪? dohc is more powerful than sohc... d= double came ( twin cam) S= single cam you can see the engine...

  2. ...turbocharger in the mix, the horsepower and torque is more powerful , not to mention the low fuel consumption and emissions...material to significantly reduce friction, operation is more refined than reduce fuel 2009-11-25 11:05:31 補充: consumption...