经测试，飞机的轴驱动升力风扇推进系统可产生超过性能需求的垂直推力比。
The aircraft’s shaft-driven lift fan propulsion system produced more vertical thrust than needed to meet performance requirements.
该四轮驱动轴驱动系统，实际上是维护自由相比，皮带驱动车和它产生的闪电快速加速。
The 4wd shaft-drive system is virtually maintenance-free compared to belt-drive cars and it produces lightning-quick acceleration.
在三相逆变器驱动电机系统中，开关器件的PWM 波导致了轴电压和轴承电流的产生，使电机受到危害，降低了电机的使用寿命。
In the three-phase inverter-fed motor drives, the switching devices'PWM waves generate shaft voltage and bearing current, and these make the motor's life shorter.
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