懂统计不？一个月亮个体样本和全部水坝样本比较。银河系里的卫星做过统计没？

来源: 奔流12959 于 2020-06-21 17:21:50 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.