When unsafe levels of gases are detected, signals alert personnel and activeventilation 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。
2
Ventilation ductwork can be flexibly installed on both sides of the device, perfect ventilation and dust collection system will ensure the active ingredients of sand in the minimal loss.
冷却床引风管路可灵活地安装于设备的两侧，完善的通风除尘系统保证型砂中的有效成分损失最小。
3
It should be emphasized in energy utilization that passive system may have priority over active system because the former makes natural ventilation and lighting be fully used.