399 how many radial (axial ) clearnance are there in this bush (journal bearing , thrust bearing) ?
399 how many radial (axial ) clearnance are there in this bush (journal bearing , thrust bearing) ?
这个轴套（轴颈轴承、止推轴承）的径向（轴向）间隙是多少？
399 how many radial (axial ) clearnance are there in this bush (journal bearing , thrust bearing) ?
这个轴套（轴颈轴承、止推轴承）的径向（轴向）间隙是多少？