Supplementary to Audible Alarms: VADs are particularly helpful in significant-sound places or in which hearing security is worn, supplementing regular audible alarms. タイムゲートを通じて第二次世界大戦時に派遣された自衛隊が、満州国に襲来するソ連赤軍の航空機を迎撃するために使用する。 The Workplace of Undergraduate Exploration is accessible to satisfy with learners independently to deba... https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/