This paper introduces the items of and methods for the improvement of chain skid system in the skid transportation system, expounds the comparing and applications of chain conveyor and belt conveyor.是什么意思_This paper introduces the items of and methods for the improvement of chain skid system in the skid transportation system, expounds the comparing and applications of chain conveyor and belt conveyor.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句