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本修改单经铁道部科学技术司于 2002年12月4日科技技函［2002」132号批准，自批准之日起实施。TB/T3022-2001《TD系列单元控制台技术条件》 第1号修改单一．标准中4.11.3改为：4.11.3 进路按钮行程为2.8mm±0.4mm;其它功能按钮行程为3.5mm±0.6mm。二．标准中4.1
This revision is approved by Science and Technology Department of the Ministry of Railways on December 4, 2002 [2002] No. 132 and implemented as of the date of approval. TB / T3022-2001 “TD series unit console technical conditions” No. 1 to modify a single. The standard 4.11.3 is changed to: 4.11.3 into the button travel 2.8mm ± 0.4mm; other features button travel 3.5mm ± 0.6mm. two. Standard 4.1