Assembly welding of Shahe Hydroelectric Power Station Y type penstock manifold with crescent rib bifurcation in the tunnel is the first practice in China.是什么意思_Assembly welding of Shahe Hydroelectric Power Station Y type penstock manifold with crescent rib bifurcation in the tunnel is the first practice in China.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句