| 单词 | catoptrics |
| 例句 | The science of reflected light, now called catoptrics. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z Concerning other aids; besides what the masters of the catoptrics, phonocamptics, otacoustics, &c., have done, something has been attempted by the Royal Society; and you know the industrious Kircher has much laboured. A Letter Book Selected with an Introduction on the History and Art of Letter-Writing |
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