15min等于几分钟？ - 百度知道
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15min等于15分钟。 因为：1min=1分钟 所以15min=15分钟 除闰秒外，一小时一般等于3600秒，或者60分钟，或者1/24天。 人类日常生活的时间度量一般是以小时为单位进行的，例如一天中的时刻，如早晨8点就是一天中的第八个小时。 小时的由来： 中国古代用“铜壶滴漏”的方法来计时，将一昼夜分成十二个 ...
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