编写标准时有关数值的书写规则,在GB1.1-81中已有明确规定。但有的编写人员由于对它的重要性认识不足或基本概念未能十分弄清,因而书写时往往与规定的原则不符。要熟记GB1,1-81有关规定,这里不再赘述。 下面就数值小数点后的位数,数字修约规则,有效数字位数的确定及计算法则,分述如下。 Writing standards for the writing of numerical rules, has been clearly defined in GB1.1-81. However, due to the lack of understanding of its importance or the lack of clear understanding of the basic concepts, some writers often do not conform to the prescribed principles. To memorize GB1, 1-81 the relevant provisions, not repeat them here. The following numerical digits after the decimal point, rounding rules, the number of significant digits to determine and calculate the rules, are described below.