JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. 元素常量 元素常量可以在比较表达式中与类型关键字一起使用。元素常量包括: arc line assoc_dim line_string bspline_curve multiline bspline_surface shape cell shared_cell complex_shape solid connected_string surface curve text ellipse text_node 父主题: 常量