straighteniing of sleeper spacing的意思|示意

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拉直轨枕间距

straighteniing of sleeper spacing的网络常见释义

矫正轨枕间距 ... straighteniing of cant rail,correction of rail inclination 矫正钢轨倾斜 straighteniing of sleeper spacing 矫正轨枕间距 straighteniing of track 矫正轨道不整,轨道整正 ..