An additional benefit, he believes, is that Trophy and other so-called "active protection" systems are lightweight.
他认为，另一好处是，Trophy系统和其他被称为“积极保护”系统都是轻型的。
The general passive building design and active fire protection systems are noted.
指出了一般的被动建筑设计和积极的火灾防护系统。
When unsafe levels of gases are detected, signals alert personnel and active ventilation systems through the fire protection system.
当探测到非安全等级的气体出现，信号就会向工作人员发出警报，并对整个消防系统启动通风系统。
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