在南京站加挂了两节车厢。

Two extra carriages were joined on at Nanjing.

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目的探讨一期切开引流加挂线术治疗肛管直肠周围脓肿的效果。

Objective To explore the effect of primary incision drainage and thread drawing therapy on perianal and perirectal abscess.

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既可进行机下计算机模拟跟踪训练，也可加挂经纬仪进行模拟实操训练。

This system not only can simulate track training in offline, but also simulate operation training with an additional transit instrument.

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