N-COUNT A switchboard is a place in a large office or business where all the telephone calls are connected. 电话总机
He asked to be connected to the central switchboard.
他要求转接到电话总机。
The characteristic of structure and performance of new type low voltage draw-out switch-board is introduced.
介绍新型低压抽屉式开关柜的结构性能和特点，并与早期低压柜作了比较。
This year, the school board decided to switch to a four-day school week, because of lack of funds.
今年，由于资金不足，学校的董事会决定每周只上四天课。
There is a switch board (control panel, distribution box) mounted on the wall.
在墙上装有一个开关板（控制盘、配电箱）。
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