| 单词 | imaginary circle |
| 释义 | imaginary circle [i¦maj·ǝ´ner·ē `sǝr·kǝl] MATHEMATICS The set of points in the x-y plane that satisfy the equation x2 + y2 = -r2, or (x-h )2 + (y-k )2 = -r2, where r is greater than zero, and x, y, h, and k are allowed to be complex numbers. |
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