| 单词 | helicoid |
| 释义 | helicoid [`hel·ǝ´kȯid] INVERTEBRATE ZOOLOGY Of a gastropod shell, shaped like a flat coil or flattened spiral. MATHEMATICS A surface generated by a curve which is rotated about a straight line and also is translated in the direction of the line at a rate that is a constant multiple of its rate of rotation. |
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