| | | | 2024 6 | | 2024 3 29 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 50 | | | 1 | 5 | | | | | 50 | | | | | | | | | | | | | | | | | | | GB/T29490 | - 2023 | GB/T3325-2016 | | GB/T33250 - 2016 - | ISO56005 | | | | | | | | | | 20 | | 10 | | | | | 20 | | 10 | | | | 1. | 20 | | 10 | | 2. | 10 | | 5 | | | | | 10 | 1 | 0.5 10 | | | | | 20 | | | 10 | | | | 20 10 5 | | 10 | 5 3 | | 10 5 | 3 | | | | 1. | 20 | | | 10 | | 2. | | 10 | | 5 | | | 10 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 20 | | | | | | | | | | | | | | | | | | | 1. | 2. | | 3. | | 4. | | 5. | | | | | | | | | | | | | 2020 15 | | | |