high grade time relay

例句：

1. 1.The high-grade time relay was a critical component in the circuit design.
   高等级时间继电器是电路设计中的关键组件。
2. 2. The engineers used the high-grade time relay to ensure smooth operation of the machine.
   工程师们使用了高等级时间继电器来确保机器的平稳运行。
3. 3. The high-grade time relay was designed to withstand extreme temperatures and pressure.
   高等级时间继电器被设计成能够承受极端温度和压力。