A direct current arc across which is connected a tuned circuit, causing the arc to oscillate and emit a sound at the frequency of the tuned circuit.
| 单词 | θ76776 | 
| 释义 | the world > matter > physics > science of sound > vibration > 			[noun]		 > direct current arc (1)		 singing arc1903 A direct current arc across which is connected a tuned circuit, causing the arc to oscillate and emit a sound at the frequency of the tuned circuit.  | 
	
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