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子覆盖 [zǐ fù gài]
[数] subcovering
- 每个开覆盖都有一个有限子覆盖。
of X has a finite sub- covering . - 每个开覆盖都有一个有限子覆盖。
Every open covering of X has a finite sub -covering. - 他们爬上了层层白雪覆盖子的山顶。
They climbed the mountain which was crowned with layers of snow.
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