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关注:1
2013-05-23 12:21
求翻译:34.10.21 The signaller must receive training with workload and programmatic content in accordance with Annex I, item 2, of this standard.是什么意思?![]() ![]() 34.10.21 The signaller must receive training with workload and programmatic content in accordance with Annex I, item 2, of this standard.
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