clearancen.清除;清理;清仓甩卖;间隙;许可证;结关;通关
clearance outwards结关出口
clearance standard限界标准
clearance bar lever检查铁条握柄
clearances junction间隙连接
clearance diatances电气间隙
clearance mechanism清除机制
clearance diametral[化] 径向间隙
clearance of tunnel隧道限界
clearance treatment清除治疗
clearance seal type间隙密封型