The amount of water available per head of population is only a quarter of the global average.
人均水资源仅有全球平均水平的四分之一。
The models are compact and reliable operation, high in average efficiency. It is applicable to the head of water, and the power station which have great load changes.
该机型结构紧凑，运行可靠，平均效率高，适用于水头及负荷变化较大的电站。
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