feed change unit

例句：

1. 1. The new feed change unit has greatly improved the efficiency of feeding.
   新的饲料更换单元大大提高了喂食的效率。
2. 2.The engineers have designed a feed change unit that can automatically adjust the feeding rate according to the needs of the animals.
   工程师们设计了一种饲料更换单元，可以根据动物的需求自动调整喂食速率。
3. 3. The farmer was pleased with the performance of the feed change unit, which reduced the time spent on feedingby half.
   农民对饲料更换单元的性能感到满意，它使喂食时间减少了一半。