在日常生活中,测量的方法可以分为直接测量和间接测量.我们把利用测量工具(测量仪器)并按一定操作程序,将被测对象与测量工具所提供的标准量进行比较并直接读出测量结果称直接测量.将一个被测量转化为若干可直接测量的量加以测量,而后再依据由定义或规律导出的关系式 In daily life, the measurement method can be divided into direct measurement and indirect measurement. We use the measurement tools (measuring instruments) and according to certain procedures, the measured object and the standard measurement tools to provide comparison and read directly The result of the measurement is called direct measurement. A measured quantity is converted into a number of directly measurable quantities to be measured, and then based on the relationship defined by the definition or rule