The output pressure-flow curve was obtained by testing the electronic control hydrostatic driving system, which confirmed the characteristic of constant power.

通过对火炮电控静压驱动系统的实测试验，获得了输出压力—流量曲线，验证了恒功率特性。

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The ideal power characteristic for traction motor system is put forward from the vehicle driving point with constant torque drive below base speed and constant power drive above base speed.

从整车驱动角度分析提出了电动汽车电机驱动系统的理想动力特性：低于额定转速恒转矩，高于额定转速恒功率。

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Based on the characteristic of constant-current driving, the authors discussed the control method for the high power LED, designed and actualized a project which has comprehensive function.

根据大功率LED的恒流驱动特性，讨论了大功率LED的驱动控制方法，设计并实现了一种功能较全面的驱动控制方案。

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