But there's another, simpler type of solar power that USES massive mirrors to focus the heat of the sun, creating steam that can drive electric turbines.
但是，还有另一种更简单的太阳能-利用巨大的镜子来集中太阳的热量，生产驱动发电涡轮机的蒸汽。
2
Gigantic presses powered by steam (and later, electricpower) could crank out books and newspapers and advertisements that strained the always-fickle paper supply.
巨型蒸汽(随后的电力)印刷机大批量地生产出书籍、报刊和广告，供应趋于稳定。
3
This paper describe a new technique that using a new power head driven dy electric hydraulic replaces the old one by steampower.