2) clear opening
净空截面
3) clearance limited plane
净空限制面
1.
The purpose of drawing the map of airport clearance limited plane and obstacle positions is to grasp the relationships between clearance limited plane and obstacles.
绘制机场净空限制面及障碍物位置图，是了解掌握净空限制面和障碍物关系的专用图。
4) tunnel cross-section area
隧道净空面积
1.
This article systematically investigated the dependence of tunnel cross-section areas on vehicle sealing characters.
系统地探讨了车辆气密性能对隧道净空面积的影响规律。
5) obstacle limitation surfaces
机场净空限制面
6) clearance
[英]['klɪərəns] [美]['klɪrəns]
净空
1.
For greater benefit, the railway freight requires operation of double-decked container trains, making the clearance under the railway overpass insufficient.
为了提升效益,铁路货运需要开行双层集装箱列车,而上跨铁路立交桥桥下净空不足。
2.
From purposes and clearance specifications of reserve runway, this paper points out the deficiencies in the airfield clearance regulations of reserve runway, and presents the composition of and the requirement for the reserve runway clearance area.
从备用跑道用途及其净空规定出发,指出现行备用跑道净空规定存在的问题,提出备用跑道净空区的组成和要求,并应用飞机起落航线理论,对应急起飞着陆及应急起飞备用跑道净空规格的来源进行了研究。
3.
Detailed analysis was made on the civil airport clearance specification and its basis as well as main affecting factors.
对民用机场净空标准的主要影响因素和确定依据进行了详细分析,指出机场净空标准不是最高标准,即并非满足了该标准就意味着机场的净空条件达到了理想状况;也不是最低标准,即并非必须完全满足该标准飞机才能在机场安全运行。
补充资料：飞机场净空区
见飞机场附近障碍物限制。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条