A board or frame bearing a set of switches for connecting and disconnecting the various circuits of an electrical system, as of a telegraph…
| 单词 | θ198144 | 
| 释义 | society > communication > telecommunication > telegraphy or telephony > 			[noun]		 > switchboard (2)		 switchboard1873 A board or frame bearing a set of switches for connecting and disconnecting the various circuits of an electrical system, as of a telegraph… switch-tablea1884 a form of switchboard shaped like an ordinary table.  | 
	
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