The luminous bridge formed between two carbon poles, when they are separated by a small air space, and a powerful current of electricity is sent…
| 单词 | θ77569 |
| 释义 | the world > matter > physics > electromagnetic radiation > electricity > electric light > [noun] > charcoal pencil > bridge between poles (2) arc1821 The luminous bridge formed between two carbon poles, when they are separated by a small air space, and a powerful current of electricity is sent… carbon arc1879 an electric arc struck between electrodes made of carbon, used esp. as an intense source of light; frequently attributive. |
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