hand centrifuge

例句：

1. 1. The hand-crank centrifuge is used to separate oil from water.
   手摇离心机用于将油与水分离。
2. 2. The hand-crank centrifuge was invented by a scientist named Dr. Smith.
   手摇离心机是由名叫史密斯的科学家发明的。
3. 3.The hand-crank centrifuge is easy to use and can be operated by anyone.
   手摇离心机易于使用，任何人都可以操作。