dedendum line of contact

例句：

1. 1.The engineer used a dedendum to connect the two wires together.
   工程师使用一个接线端子将两根电线连接起来。
2. 2. The dedendum on the wall is where the light switch is located.
   墙上的接线端子是开关所在的位置。
3. 3. The dedendum was designed to prevent short circuits and ensure safe operation.
   接线端子的设计旨在防止短路并确保安全运行。