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标目和标值是科技期刊函数图(坐标图)的重要组成部分。标目是说明坐标轴物理意义的必要项目,由测量量(或函数)符号与相应单位的比表示,如L/m,F/Hz,α/(m·s~(-2)),…;标值是坐标轴定量表述的尺度,它对应标目的数值。当函数图标值的数值较大(>1000)或较小(<0.001)时,为简化图示使函数图标值的数字不超过3位,原函数图的标目就要作相应的变化。标目变化的方法有
Headings and standard values are important parts of science and technology journal function chart (coordinate chart). Headings are necessary items to explain the physical meaning of the coordinate axis and are represented by the ratio of the measured value (or function) symbol to the corresponding unit, such as L / m, F / Hz, α / (m · s ~ ; The standard value is a measure of the quantitative representation of the axis, which corresponds to the value of the heading. When the value of a function icon is large (> 1000) or smaller (<0.001), the heading of the original function graph should be changed accordingly to simplify the illustration so that the value of the function icon does not exceed 3 digits. There are ways to change the headings