The third step is in the hot slide Small Cheliangduan test, the train started charging operation, and then proceed to Huoying Dongzhimen station to the hot line is further testing.
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释义
第三步是在回龙观车辆段的热滑试验,列车开始带电运行,然后进行霍营站至东直门的正线热滑试验。
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