发动机的扭矩曲线比较陡，对转速比较敏感，这和坐式摩托车的要求相适应。
The torque curve of the engine is quite steep and very sensitive to the rotating speed, which are conformable to the requirement by scooters.
尽管马自达的发动机在一个很宽的转速区间内形成一个扭矩曲线平台，但是他们没有能力和VTEC发动机的灵活性相比。
While Mazda's engines do maintain a flat torque curve over a wide range, they do not have the capacity to match a VTEC engine's flexibility.
通过发动机性能曲线，对发动机的功率、扭矩和燃料消耗量进行了模拟。
The system performance with different engine speed is studied in the paper, and the engine power, engine torque and fuel consumption is simulated through the engine performance curve.
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