Materials for railway vehicles; elastomers; functional group: non permanent door and window seals; specification groups.

铁道机车用的材料；弹性体，功能组；非永久性密封的门、窗型材，要求类别。

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Materials for railway vehicles; elastomers, functional group: permanent door and window seals, specification group.

铁道机车用的材料；弹性体，功能组；永久性密封的门、窗型材，要求类别。

youdao