屋顶水箱 meaning in English

attic tank
roof tank

( 2 ) in this paper , the author summarized the working principle , the superiority and the limitations of a few main kinds of classical sprinkler systems ; put emphasis on the importance of a few key points which is relevant to the function of the system , such as the choosing of sprinkler and it ' s fixing , the automatic checking function of water pump , the layout of alarm valve , especially the choosing of sprinkler and it ' s fixing ; looked through the feasibility of which we used water instead of gas by water mist especially finely divided water mist fire - extinguishing technique
展望了水喷雾技术特别是细水雾技术进行以水代气灭火的可行性。 ( 3 )针对工程设计中最复杂，工作量最大的部分-系统水力计算部分，在规范的基础上，基于excel电子表格，提出了经济流速的范围，提供了一套行之有效的设计计算方法，同时，对屋顶水箱和增压泵的设置这一难以解决的问题发表了见解，既确保了自动喷水灭火系统初期快速灭火、控火的性能，又节省了大量的设计工作时间。