The aerators are widely used in flood discharge tunnels and spillways to prevent the cavitation damage of the structures,and air is sucked by flow from the bottom in normal aerator.是什么意思_The aerators are widely used in flood discharge tunnels and spillways to prevent the cavitation damage of the structures,and air is sucked by flow from the bottom in normal aerator.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句