The article studies some relative topological properties through three respects: relative T1 space, relative T2 space, relative regular space, relative normal space.
本文从下列三个方面：相对T1空间、相对T2空间，相对正则空间和相对正规空间讨论了某些相对拓扑性质。
The article studies some relative topological properties through three respects: relative T1 space, relative T2 space, relative regular space, relative normal space.
本文从下列三个方面：相对T1空间、相对T2空间，相对正则空间和相对正规空间讨论了某些相对拓扑性质。
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