The weldability and cold bending property are studied to HITEN780S QT steel and its applica-tion to the crane frame of QY50 automobile crane presented also.是什么意思_The weldability and cold bending property are studied to HITEN780S QT steel and its applica-tion to the crane frame of QY50 automobile crane presented also.在线翻译_英语_读音_用法_例句