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单词
first species
释义
first species
first species
[
′fərst ′spē‚shēz
]
(mathematics)
The class of sets
G
0
such that one of the sets
G
n
is the null set, where, in general,
G
n
is the derived set of
G
n
-1
.
随便看
pkwt
pkwtt
pkwy
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pkz
pkzip
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pkzp
pkzr
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p&l
p(l)
p.l.
p/l
pl
pl.
pl/1
pl1
pl-11
pl-11 programming language
pl1 language
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更新时间:2025/3/19 13:05:01