switchboad

常见例句

• common-battery telephone switchboad
  共电制电话交换机
• switchboad metal-clad switchboad
  铠装配电盘
• private branch exchange switchboad
  小交换机
• central battery local switchboad
  共电式市内交换机
• wired logic coutrolled switchboad
  布控交换机
• traffic control telephone main switchboad
  调度电话总机
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