刚刚走出考场的小粗心感慨地说:“今天手表没电池了,考试差点误了交卷时间。”一旁的小好问突然接了句:“真不知道古人科举考试时没手表是怎么把握时间的。”小灵通立即回复说:“小好问,古人虽然没时钟,但也有自己的计时工具哦。”神通广大的奥秘精灵在一旁补充说:“没错,一千多年前的北宋,能工巧匠们就发明了水钟、流沙钟等计时工具。今天咱们不妨就追溯一下时间计量的前世今生吧!” Just walked out of the examination room carelessly said: “Today watch no battery, the test almost missed the handing in time.” “Small asked suddenly asked a sentence: ” I really do not know how the ancient imperial examinations did not watch how Grasp the time. “PHS immediately replied: ” Little asked, although the ancients did not clock, but also has its own timing tool. “Divine mystery wizard added aside: ” Yes, a thousand Many years ago, the Northern Song Dynasty, craftsmen who invented the clock, sand clock and other timing tools. Today we may wish to trace the time past life measurement it!