ISO 561-1989 选煤厂 图形符号

标准号：ISO 561-1989
中文标准名称：选煤厂 图形符号
英文标准名称：Coal preparation plant; graphical symbols
标准类型：D04
发布日期：1999/12/31 12:00:00
实施日期：1989/12/1 12:00:00
中国标准分类号：D04
国际标准分类号：01.080.20;73.040
适用范围：The symbols have been selected in accordance with the following principles: a) the plants should be widely used; b) the symbols should be easy to draw and readily be distinguishable one from another; c) the principle and not the appearance of any particular type of machine should be represented, d) where a single symbol represents a group of items for which separate symbols are s-tandardized nationally, the ISO symbol should be readily distinguishable from any one of the national symbols.