干蒸汽发电是最古老的地热利用技术，从地面断层开采出蒸汽并直接用于驱动汽轮机。
Dry steam, the oldest geothermal technology, takes steam out of fractures in the ground and USES it to directly drive a turbine.
大体上说，这种热能就像在传统的发电厂一样，可将水加热，产生蒸汽，驱动汽轮机发电。
In principle, this heat could be used, as in conventional power plants, to boil water and create steam that drives a turbine.
CSP系统通过镜面收集和聚焦阳光束，以光来高温加热液体，再用液体驱动汽轮机。
CSP systems capture and focus the sun's rays, using mirrors, to heat a working fluid to high temperatures and use it to drive a turbine.
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