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在测量长度的过程中,我们经常会遇到一些不好直接测量或由于物体形状特殊无法直接测量的情况,如细铜丝的直径、圆柱体的周长、硬币的直径、油筒内最长的直线、电线杆的高度等,要解决这些问题,需要同学们掌握以下几种特殊的测量方法.一、测多算少法由于测量工具精确度的限制,某些微小量无法直接测量,在测量时,可以把若干个相同的微小量集中起来,作为一个整体进行测量,将测出的总量除以微小量的个数,就可以得出被测量的值,这种测量方法叫做“测多算少法”.
In the process of measuring the length, we often encounter situations where it is not straightforward to measure directly or because the shape of the object cannot be measured directly. For example, the diameter of a thin copper wire, the circumference of a cylinder, the diameter of a coin, and the longest length in a cylinder In order to solve these problems, the students need to master the following special measurement methods. First, measure more than one method Due to the limitation of the accuracy of measurement tools, some small quantities cannot be directly measured. In the measurement, several identical minute quantities can be collected and measured as a whole. The measured total amount is divided by the number of minute quantities to obtain the measured value. This measurement method is called “ More than a small method of measurement ”.