The tow-pontoon is full welded body consisting of the steel structure bearing frame and steel plate flotage crust and I-shaped suspend girder.是什么意思_The tow-pontoon is full welded body consisting of the steel structure bearing frame and steel plate flotage crust and I-shaped suspend girder.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句