... back-to-back 背对背的 back-up breaker 备用断路器 back-up circuit breaker 备用电路断路器 ...
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短语
设备用断路器
circuit breaker for equipmem
备用电路断路器
back-up circuit breaker
;
up circuit breaker
-
backup breaker
back-up breaker
-
back-up breaker
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