Study of the Dynamic Properties and Reaction Mechanism of the Large and Medium-span Suspending Cable Aerial Crossing Pipeline Structure in the process of Pigging是什么意思_Study of the Dynamic Properties and Reaction Mechanism of the Large and Medium-span Suspending Cable Aerial Crossing Pipeline Structure in the process of Pigging在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句