elevating scraper是什么意思

用法例句

,meanwhile the structure of double rake scraper with automatic lift in setting tank and its modification effect are also presented.

介绍甘肃金化集团公司18万t/a磷酸二铵磷酸沉降槽刮泥机的技术改造,阐述自动升降式双耙刮泥机结构及改造后的技术效果。