你需要一个常开的继电器。

You need a normally open relay.

这个继电器可以承受高电压。

This relay can withstand high voltage.

继电器用于控制电路的开关。

The relay is used to control the circuit switch.

这个继电器的默认状态是常闭。

The default state of this relay is normal close.

中间继电器用于控制电路的开关。

The intermediate relay is used to control the circuit switch.

我们的工程师正在测试新的继电器。

Our engineers are testing the new relay.

你需要一个继电器来完成这个项目。

You need a relay to complete this project.

这个设备的中间继电器已经损坏了。

The intermediate relay of this device is already damaged.

安装新的闪光继电器需要专业技能。

Installing a new flicker relay requires professional skills.

请检查一下中间继电器是否正常工作。

Please check if the intermediate relay is working properly.