radial clearance of plain journal bearing

例句：

1. 1.The radial clearance of the bearing is critical for its performance.
   轴承的径向间隙对其性能至关重要。
2. 2. In order to reduce wear, the manufacturer has increased the radial clearance.
   为了减少磨损，制造商已经增加了径向间隙。
3. 3. The radial clearance of the rolling bearing is measured by a special tool.
   滚动轴承的径向间隙通过特殊工具测量。