For the use of fire alarm system, fire detector alarm unit testing and installation of construction engineering units during the installation and acceptance of the tools is necessary.
为各使用火灾报警系统的单位测试火灾探测器报警功能及安装施工工程单位安装验收过程中必备之工具。
2
There are three system areas to be considered in the construction and design of the WFI system: the WFI purification unit, the distribution system, and the storage system for the water.
在建造和设计WFI系统的时候需要考虑三个系统区域：WFI纯化单元，蒸馏系统和水贮存系统。
3
It not only investigated the structure factor's construction to national identity of international system, but considered the composing unit of international system to mold national identity.