| | | | | 2023 23 | | | | | | 2023 7 18 | | | | | | | | | | | | 11 | ︹ 2016 ︺ 8 | | LB/T 054 2016 | | ︹ 2021 ︺ 32 | | | | | | | | | | | 30 | 90% | | 1 1000 | | 15 | | | 5 | 95% | 10 | 8 8 5 5 | | | | 1000 | | | 10% | 20 | | | | | | | | | 3 2 1 | 8000 | | | | | 3 | | 30 | 1000 | | 2 | | | | | | | | | | | |