regional fire alarm device
regional fire alarm device
区域火灾报警装置
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The system consists of concentrating fire alarm device and regional fire alarm device. It is characterized as simply structure, working reliable, function powerful, price cheap and practical.
该系统由集中火灾报警器及区域火灾报警器组成，具有结构简单，工作可靠，功能完善，造价低廉，实用等特点。
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