Steel lined reinforced concrete penstock built on the downstreamsurface of dam is used in TGPs power station.This kind of penstock is of a novel style.是什么意思_Steel lined reinforced concrete penstock built on the downstreamsurface of dam is used in TGPs power station.This kind of penstock is of a novel style.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句