DIN EN 1049-2:1994-02
纺织品;机织物;建造;分析方法;第2部分:单位长度螺纹数的测定(ISO 7211-2:1984,修改)
Textiles; woven fabrics; construction; methods of analysis; part 2: determination of number of threads per unit length (ISO 7211-2:1984, modified); German version EN 1049-2:1993