track geometry measuring trolley
... track geometry measuring trolley 轨道检查小车 track geometry tolerances 轨道几何尺寸容许公差 track geometry car 轨道检测车 ...
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轨道是起重机或小车平稳运行的基础，一般要求每年检查2 ~ 4次。
Track is the foundation of crane or car running smoothly, generally requires checking 2 ~ 4 times every year.
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