矢量的标注以前书中，矢量习惯用带箭头的字母来表示，如ａ。根据国标《物理科学和技术中使用的数学符号》的规定，书中矢量一律用黑体表示，即ａ应表示成ａ。在书稿中，由于符号的黑体与白体难以区分，因此，编辑应要求作者们用ａ形式来表示矢量，由编辑在加工稿件过程中... Vector calligraphic Former book, vector habit with letters with arrows to represent, such as a. According to the national standard “Mathematical Symbols Used in Physics and Technology”, all the vectors in the book should be bold, that is, a should be expressed as a. In the manuscript, because the symbol of bold and white body is difficult to distinguish, therefore, the editor should require the authors to use a form of vector, edited by the editor in the process of manuscripts ...