Maintenance should first check the tire pressure, wear, nut loose or fall off, remove the twins or tread on the inserts and nails and other sharp objects.
养护时首先应查看轮胎气压、磨损状况，螺母有无松动或掉落，除去双胎间或胎面上的嵌入物及铁钉等尖利杂物。
The depth of the tread makes the I-Beam well suited to loose and medium-packed conditions with deep areas of loose dirt around the edges of the track.
深度使胎面的I -梁适合松散和中型包装条件，深领域的松散的泥土的边缘附近的轨道。
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