Dry steam, the oldest geothermal technology, takes steam out of fractures in the ground and USES it to directly drive a turbine.
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。
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I use steam, dragging a small turbine pumps, the exhaust steam comprehensive re-use, thus realizing the thermal power cogeneration, Cascade comprehensive utilization of geothermal energy.