scrapern.刮刀；刮削器；刮土机scraper chain conveyor链板输送机scraper foundry trowel刮刀scraper type rockloader耙式装岩机scraper trough conveyer槽形链板运输机scraper trough conveyor槽型刮板输送机scraper conveyer system刮板输送系统scraper-knife grinder刮刀研磨机scraper compression ring刮油压环scraper type rock loader耙式装岩机scraper-knife-grindern.刮刀磨削机