single-pole circuit breaker

航海及海运专业... ... single-plate rudder 单板舵 single-pole circuit breaker 单极断路器 single-pole double throw 单刀双投 ...

... single-pole 单杆[的]，单极[的] single-pole circuit breaker 单刀断路器 single-pole double-throw 单刀双投，单刀双掷 ...