Actuating process of the balancer is discussed and then a step drive voltage waveform is defined.

介绍了平衡头作动过程，基于此给出了阶跃型驱动电压波形。

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One critical step that could help to drive change would be to require Ph.D. students and postdoctoral scientists to follow an individual development plan.

一个有助于推动变革的关键步骤是要求博士学生和博士后科学家遵循一个个人发展计划。

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The final step came when steam was introduced into the cylinder to drive the piston backward as well as forward, thereby increasing the speed of the engine and cutting its fuel consumption.

最后一步是将蒸汽引入气缸，使得活塞前后推动，从而提高了发动机的速度，降低了燃料消耗。

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President Umaru Yar'Adua has come under pressure to step up his anti-graft drive in one of the world's most tainted countries since he came to power in 2007.

VOA: standard.2009.04.18

To step forward and drive my own negotiations, as an adult woman, was both a liberating and intimidating experience.

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Or perhaps take it a step further and drive the online service, a threat to the traditional cable business, right into the ground?

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Jack McKee, who is also a DUP councillor, found the device on the front step of his Shanlee Drive home in Larne on Saturday.

BBC: Hoax alert at DPP man's home