除了凹面镜，能量塔以外，还有第三种新的太阳能热技术。结合了曲线，盘状镜面和热发动机的装置。
In addition to parabolic troughs and power-towers there is also a third solar-thermal technology, which combines curved, dish-shaped mirrors with heat engines.
藉由改变气球内的气压，就可以调整气球反射给太阳能电池的光线焦距，还有气球内的凹面镜弧度。
The focus of the light on the solar cell can also be fine-tuned by changing the air pressure within the balloon, and thus the curvature of the mirror.
借由改变气球内的气压，就可以调整气球反射给太阳能电池的光线焦距，还有气球内的凹面镜弧度。
The focus of the light on the solar cell can also be fine-tuned by changing the air pressure within the balloon, and thus the curvature of the mirror.
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