英语词典消防英语

alarm speaker

alarm speaker

翻译:报警扬声器

同义词

1)alarm speaker,报警扬声器2)horn,角;喇叭，扬声器，报警器3)siren,n.警报声,警报器4)sound siren,声音警报器5)a sounder of alarms.,报警发声器6)voice & light annunciator,声光报警器

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