It is used mainly for raising and lowering materials in sloping tunnels, coalmines, metal mines and nonmetal mines. In other situations, it may serve to assist transportation equipment.是什么意思_It is used mainly for raising and lowering materials in sloping tunnels, coalmines, metal mines and nonmetal mines. In other situations, it may serve to assist transportation equipment.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句