我国在2003年底制成了350万年误差不会超过1秒的铯(sè)原子喷泉钟,有的同学问:为什么时间要这么准确?准确的时间到底有什么用呢?这要看情况而定。在日常生活中如果晚了3秒是不会受到责备的,但是在体育比赛中我们就可以发现零点几秒的重要性了,比如对雪橇滑降的记时要达到千分 At the end of 2003, China made an atomic fountain bell with an error of no more than 1 second for 3.5 million years. Some students asked: Why is time so accurate? What is the use of an accurate time? This depends on the situation. set. In daily life, if it is 3 seconds late, it will not be blamed, but we can find the importance of a few seconds in the sports competition. For example, the time of the sled down should reach 1000 points.