An underground enclosure with access from the surface of the ground or from the sea. 从地表或海中有入口的地下围圈。
The key nodes in FHAN are called intelligent access router ( IAR ). Through IAR different information from other underground subsystems can access into and transmit in FHAN network. FHAN中的节点称作智能接入路由器(IAR),井下各种不同信息均通过IAR接入到主干网络进行传输。
Building strategic underground water-sealed oil depots is one important access to assure the safe and stable national oil storage system. 建设战略地下水封石油储备库是完善国家石油储备体系的重要途径之一。
By analyzing the special environment underground and existent problems in the application of UWB wireless access system underground, the practical feasibility of using the technology underground coal mine can be proved. 通过对矿井下的具体环境和UWB无线接入系统在井下应用存在问题的分析,证明该技术在煤矿井下应用的实际可行性。
With a new underground station constructed at the base of the hotel, easy access to the whole city will make the hotel the best and first choice. 酒店旁的地铁站使宾客轻松到达城市的每个角落,因此酒店将成为您最佳的选择。