英语词汇“singing arc”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	singing arc
释义	singing arc noun : a direct current arc in parallel with which is a local circuit containing a condenser and inductance in series where oscillations take place according to the tuning and cause the arc to emit a musical note — compare poulsen arc
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