米、千克、秒基本单位定义的发展安徽大学李光刘磊武汉交通科技大学刘明一、概述自从人类进入社会性生活，为了进行产品的生产、分配和交换，便产生了“量度”的要求。例如判断物体的大小、长短便需要有长度的量度；判断物体的轻重需要有重量或质量的量度；判断事物的发生... Meters, Kilograms, Seconds Basic Unit Definition of Development Anhui University Li Guang Liu Lei Wuhan Jiaotong University of Science and Technology Liu Mingyi Summary Since mankind entered into social life, “measurement” has taken place in order to produce, distribute and exchange products. For example, to determine the size of the object, the length of the length of the need to have a measure of the weight of the object to determine the need for a weight or quality measurement;