“sinusoidal spiral”的概念、定义、翻译、参考文献-科学参考

单词	sinusoidal spiral
释义	sinusoidal spiral [´sī·nǝ`sȯid·ǝl `spī·rǝl] ^MATHEMATICS A plane curve whose equation in polar coordinates (r, θ) is rⁿ=aⁿ cos nθ, where a is a constant and n is a rational number.
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