Scientists are working on a solar-powered battery pack which could be up to 50 per cent lighter than the current power cells carried by UK soldiers.

科学家们正在研究一种太阳能电池包，能比目前英国士兵携带的电池减少到50%的重量。

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More light generates more power, but as more power is generated the cells heat up, which reduces their efficiency.

光越多产生的电就越多，但是发电越多，单元就会受热，会导致降低效率。

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Power Tongs and Torque Turns Load Cells: Designed for use in power tongs or drill pipe make-up and break-out applications.

动力钳和自动旋紧管箍机的载荷压力传感器：设计用在动力钳或钻杆的组装和拆卸应用中。

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On a larger scale, stationary fuel cells are providing back-up power for hospitals, military bases, banks, and telecoms (especially to keep cell towers online).

FORBES: German Company Invents Zero-Emission Power For RVs

Energy deregulation in Europe and America allows new firms to set up cheap, efficient power sources (such as fuel cells) close to the consumer.

ECONOMIST: Fuel cells meet big business | The

Dramatic advances in technologies such as fuel cells and microturbines, which generate power efficiently and cleanly on a smaller scale, may make up the shortfall.

ECONOMIST: Charge ahead