coupling agent

例句：

1. 1. The new device uses a special coupling agent to connect the parts together.
   这个新设备使用一种特殊的连接剂将部件连接在一起。
2. 2. The researchers found that the coupling agent played an important role in the process.
   研究人员发现，这种连接剂在过程中起到了重要的作用。
3. 3. The coupling agent was carefully mixed with the other ingredients before being used in the production process.
   在使用之前，这种连接剂与其他成分被小心地混合在一起。