clearance limit survey [测] 净空区测量
highway clearance limit 道路净空界限
resumption clearance limit 收地清拆范围
overhead clearance limit 机器顶部通过间隙限制
obstacle clearance limit 障碍许可限度
radial clearance limit 径向游隙极限
Map of airport clearance limit and obstacle location serves as a special one to understand and promote the relation between clearance limits and obstacles.
机场净空限制面及障碍物位置图，是了解掌握限制面和障碍物关系的专业地图。
Severe deformation occurred at the siluric stratum at the ridge of Wushaoling Tunnel, causing splitting of primary lining and even exceeding clearance limit.
乌鞘岭隧道岭脊段志留系地层千枚岩夹板岩地段，施工中发生大变形，初期支护开裂破坏甚至侵限。
Clearance between tube and various dies is of great importance to influence forming limit and quality during thin-walled nc bending process.
管材与不同部位模具间隙是影响薄壁管数控弯曲过程成形极限和成形质量的重要因素。
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