clearancen.清除;清理;清仓甩卖;间隙;许可证;结关;通关
clearance of carbon particles碳粒廓清
clearance take-up mechanism滚筒调距装置
clearance of roadside traffic清理沿线各站货运办法
clearance interfering section侵限段
clearance stomach hot methods清胃热
clearance of stability margin稳定裕度评估
clearance and inhibition cost清理和制止费用
clearance gage for pantographs集电弓隔离限界