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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The simulation results show that the tracking error of middle-convex and varying ellipse piston linear servo drive system can be reduced effectively by this method.

仿真结果表明，采用这种控制策略可以十分有效地减小中凸变椭圆活塞直线伺服驱动系统的跟踪误差。

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Compared with the reciprocating compressors with the structure of traditional crankshaft, it adopts a CAM with two repose Angle segment to drive the piston.

与传统曲轴连杆结构压缩机不同的是，它采用带两个休止角段的凸轮驱动活塞，活塞的加速度选择为正弦加速度。

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The efficiency of his design is further improved by using the moving piston to drive water through a special steam nozzle, which increases the effectiveness of the heat transfer between the inside and outside of the reactor.

ECONOMIST: Nuclear power