The paper introduces two typical structures of BAS system in urban rail transit, that is, the independent system structure and integrated system structure, analyzing through comparison the features, virtues and defects of the two systems and the conditions that permit to adopt these two systems. 摘要介绍城轨交通中环境与设备监控系统(bas)的典型系统结构,包括独立系统结构和集成系统结构;通过对比,分析系统结构的特点、利弊和采用条件。
In case of transit, have you an entry permit for the final country of destination? 在过境的情况下,您具有最终目的国的入境许可吗?
In case of transit: Do you have an entry permit for the final country of destinations? 过境签证情况:是否持有目的地国家入境签证?