每个测量工作者想必都有过这样的经验,就是在你第一次做实验时,尽管使用的仪器多么精密,采用的方法多么完善,并且相当细心操作,你往往以为能寻到被测之量的真值,但结果总不可能。随着知识的增长和经验的积累,你逐渐会发现:在任何测量或实验过程中,误差是不可避免的,而形形色色的误差正包围着你。 Every surveyor presumably had the experience that the first time you did the experiment, you thought that you could find the type of device under test, despite the sophistication of the instrument used, how well the method was used, and how careful it was to operate The true value, but the result is always impossible. As knowledge grows and experience accumulates, you gradually discover that error is inevitable in any measurement or experiment, and errors of all kinds are surrounding you.