This paper emphatically discusses the cyclic-flow coal transport system fordeep open-pit including the coal transport technology and equipment, layout of conveyor tunnels, typesof crushers and so on.是什么意思_This paper emphatically discusses the cyclic-flow coal transport system fordeep open-pit including the coal transport technology and equipment, layout of conveyor tunnels, typesof crushers and so on.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句