SPST

• n. 单刀单掷开关

例句

用作名词 (n.)

1. In the event of a seal leak, the module energizes one of its SPST output relays indicating that seal maintenance or replacement is required before the motor is damaged.
   如果密封泄漏，控制模块就会激活单刀单掷输出继电器，指示在电机被破坏之前，必须对密封进行维护或更换。