Variable speed hydraulic drive system is a new type energy saving system.

变转速液压驱动系统是一种新型的节能传动系统。

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Supercapacitor based energy saving system can absorb the braking energy when motor decelerate, which achieve energy saving.

采用超级电容器储能的节能系统，能够在电机制动时回收制动能量，从而实现了能量的节约。

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The reinforced concrete masonry shear wall structure with its energy saving system is the main structure system for the high-building.

高强配筋砌块砌体剪力墙结构及其节能体系是高层砌块建筑的主要结构体系。

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With the right combination of capacity, performance and rapid power cycling storage system designs can pump more iron while keeping cool and saving energy.

FORBES: Pumping Iron and Keeping Cool

Of course the total energy used by a hard disk drive depends upon the actual usage and power saving modes, and caching of data can reduce the energy used by a HDD in a computer system.

FORBES: Seagate Discontinuing 7,200 RPM Drives--A Focus on Capacity?