A hydroelectric power station which uses the river flow as it occurs, the filling period of its own reservoir by the cumulative water flows being practical negligible.是什么意思_A hydroelectric power station which uses the river flow as it occurs, the filling period of its own reservoir by the cumulative water flows being practical negligible.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句