X中每个有唯一聚点的可数开滤子基收敛于该聚点；

Every countable open filter base which has an only accumulation point in X is convergent to the accumulation point;

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X中每个有唯一聚点的可数开滤子基收敛于该聚点；

Every countable open filter base which has an only accumulation point in X is convergent to the accumulation point;

youdao