compound feed-screw graduated collar

例句：

1. 1.The new feeding system is designed to provide a more efficient and cost-effective way of feeding livestock.
   新的喂养系统旨在提供一种更高效、成本更低的牲畜喂养方式。
2. 2. The compound feed-screw graduated collar is an essential tool for farmers to monitor the growth of their livestock.
   复合饲料螺旋式槽形带是农民监测牲畜生长的重要工具。
3. 3.In this study, we used a compound feed-screw graduated collar to measure the weight gain of pigs.
   在这项研究中，我们使用复合饲料螺旋式槽形带来测量猪的增重。