skim riser

例句：

1. 1.The skim riser is used to separate the fat from the oil.
   撇油器用于将脂肪从油中分离出来。
2. 2.The skim riser was designed to improve the quality of the milk.
   撇油器被设计用来提高牛奶的质量。
3. 3.The skim riser is a crucial part of the dairy industry.
   撇油器是乳制品行业不可或缺的一部分。