超大空间、超多防护区应采用低压二氧化碳（CO2）灭火系统。
Ultra-large spaces and multi-protection areas should be protected by low pressure CO2 system.
变配电房和通讯设备机房设低压二氧化碳气体灭火系统。
Low pressure CO2 extinguisher systems are provided in diesel generator rooms, transformer substations and telecommunication equipment rooms.
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