短語詞組短語scraper trough conveyor 槽型刮板輸送機scraper r conveyor 刮板運輸機scraper chain conveyor 鏈板輸送機;埋刮板輸送機;鏈?zhǔn)焦瓮吝\輸機Large scraper conveyor 大型埋刮板輸送機submerged scraper conveyor 刮板撈渣機t scraper conveyor t 刮板機embedded scraper conveyor 埋刮板輸送機scraper r trough conveyor 槽型刮板輸送機chain scraper conveyor 鏈板輸送機 返回 scraper conveyor