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proper subset
释义
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subset
proper subset
proper subset
[
′präp·ər ′səb‚set
]
(mathematics)
A set
X
is a proper subset of a set
Y
if there is an element of
Y
which is not in
X
while
X
is a subset of
Y
.
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更新时间:2025/7/24 14:27:37