基本解释n.单刀单掷开关同根派生 SPST相关词英汉例句用作名词 (n.)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。SPST更多例句