Actuating process of the balancer is discussed and then a stepdrive 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。
2
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。
3
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.