英语词汇“manual fire alarm system”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	manual fire alarm system
释义	manual fire alarm system manual fire alarm system A fire alarm system that is manually operated, so arranged that the operation of any one station will ring all signals throughout the building as well as at one or more selected locations.
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