switchboad

常见例句

• common-battery telephone switchboad
  共電制電話交換機
• switchboad metal-clad switchboad
  鎧裝配電磐
• private branch exchange switchboad
  小交換機
• central battery local switchboad
  共電式市內交換機
• wired logic coutrolled switchboad
  佈控交換機
• traffic control telephone main switchboad
  調度電話縂機
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