검색어: manholes (영어 - 중국어(간체자))

manholes
沙井

manholes, conduits and other infrastructure
探孔、管道和其他基础设施

alarms for infrastructure hatches and manholes
基础设施管线入口和检修孔的警报器

:: alarms for infrastructure hatches and manholes
* 基础设施管线入口和检修孔警报器

(e) a change in location of, or a modification to, nozzles and manholes.
(e) 修改管嘴和检查孔或改变位置。

(e) a change of location or a modification to nozzles and manholes provided that:
管嘴和检查孔的改变位置或修改符合下列条件：

installation of secure electric utility vault grates in and around the perimeter to prevent intrusions, and provision of surface-mounted magnetic contacts on the interior side of utility manholes in the proximity of the united nations complex
联合国场地外围及附近安装安全电盒护栅，防止打开，并在联合国建筑群附近的水电检查入孔内侧表面安置磁性接触装置

6.6.3.5.6 all portable tanks shall be fitted with manholes or other inspection openings of suitable size to allow for internal inspection and adequate access for maintenance and repair of the interior.
6.6.3.5.6 便携式罐体一律应有尺寸合适的出入口或其他检查口以便作内部检查并有足够空间作内部保养和维修。

manhole
窨井