| 单词 | cardioid |
| 释义 | Word Frequency cardioid(ˈkɑːdɪˌɔɪd) noun a heart-shaped curve generated by a fixed point on a circle as it rolls around another fixed circle of equal radius, a. Equation: r = a(1 – cos φ), where r is the radius vector and φ is the polar angle |
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