英语词汇“closed ball”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	closed ball
释义	closed ball closed ball [¦klōzd ′bȯl] (mathematics) In a metric space, a closed set about a point x which consists of all points that are equal to or less than a fixed distance from x.
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