Mechanical pencils for technical drawings — Part 3: Black leads — Bending strengths of HB leads
技术制图用机械铅笔第3部分:黑色引线HB引线的弯曲强度

2022-01-26

技术制图活动铅笔 第3部分：黑铅芯 HB铅芯弯曲强度
Mechanical pencils for technical drawings—Part 3: Black leads—Bending strengths of HB leads

2020-07-21

샤프연필?제3부: 흑연 심?HB심의 굽힘 강도
机械铅笔.第3部分:黑色引线.HB引线的弯曲强度

2017-09-13

샤프연필?제3부: 흑연 심?HB심의 굽힘 강도
机械铅笔第3部分:黑色引线 - HB导线的弯曲强度

2017-09-13

Mechanical pencils for technical drawings — Part 2: Black leads — Classification and dimensions
技术制图用机械铅笔第2部分:黑线笔分类和尺寸

2022-06-01

技术制图活动铅笔 第2部分：黑铅芯 分类和尺寸
Mechanical pencils for technical drawings—Part 2: Black leads—Classification and dimensions

2020-07-21

Mechanical pencils - Part 3: Black leads; bending strengths of HB leads; identical with ISO 9177-3:1994
机械铅笔.第3部分:黑色铅笔芯；HB导线的弯曲强度；与ISO 9177-3:1994相同

1995-01-01