引言图学者都知道，掌握制图标准是绘制工程图的一个重要方面。自《机械制图标准》（简称机标）、《房屋建筑制图标准》（简称建标）、《水利水电工程制图标准》（简称水标）颁布实施以来，依照新制图标准相继出版了一些制图教材，在使用过程中笔者感到有些图的名称、标注... Introduction Figure scholars know that mastering drawing standards is an important aspect of drawing a drawing. Since the promulgation and implementation of “Mechanical Drawing Standard” (referred to as machine mark), “Building Construction Drawing Standard” (referred to as building mark) and “Water Conservancy and Hydropower Engineering Drawing Standard” (hereinafter referred to as “Water Mark”), some cartographic materials , In the course of using the author feel that some of the map’s name, label ...