一、前言人类在认识世界和改造世界的历史长河中,从一开始就遇到许多称量问题,如称重量、量长度、测量体积等。称量问题之所以产生,是因为人类要对自己观察的对象的某种属性进行数量化描述。为解决这个问题,人类逐步地懂得制定一些相应的标准,并以此为依据创造了许许多多的称量仪器,也就是说人们懂得了 I. INTRODUCTION In the long history of mankind’s understanding of the world and the transformation of the world, many weighing problems have been encountered from the very beginning, such as weighing, length, and measurement volume. The weighing problem arises because humans have to quantitatively describe certain attributes of the objects they observe. To solve this problem, humans gradually learned to formulate some corresponding standards and created many weighing instruments based on this, which means that people understand that