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主断路器 zhǔ duànlùqì
el. general circuit breaker; main breaker; mains breaker
met. main circuit breaker
railw. line main circuit-breaker; main circuit-breaker
电路断路器
tech. main circuit breaker
主 断 路器
: 12 phrases in 5 subjects
Architecture1
Aviation1
Electronics2
Rail transport4
Technology4