The actuality of process and production of heel of 60AT rail for railway switches and crossing was introduced, and the congener technology at home and abroad was summarized as well.
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介绍了铁路道岔60AT轨跟端加工生产工艺现状,国内外同类技术概况。
单词 The actuality of process and production of heel of 60AT rail for railway switches and crossing was introduced, and the congener technology at home and abroad was summarized as well. 的词典定义。@海词词典-最好的学习型词典
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