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单词
epi spiral
释义
epi spiral
epi spiral
[
′ep·ē ‚spī·rəl
]
(mathematics)
A plane curve whose equation in polar coordinates (
r
, θ) is
r
cos
n
θ =
a
, where
a
is a constant and
n
is an integer.
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更新时间:2024/12/23 17:52:16