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。
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。
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.
在能源利用上强调被动式系统优先于主动系统，因为被动式系统充分利用了自然通风与自然采光。
As the climate active façade is completely closed there is normally no possibility for natural ventilation and smoke exhaust (if necessary).
由于通常主动式气候调节幕墙是全封闭的结构，所以不能提供自然通风和排烟（如果必要的话）。
Through analysis of several years′ gas accidents and summarization of ventilation safety inspection and practice, measures and suggestions of active prevention of gas accident are put forward.
通过对山西省煤矿多年瓦斯事故的分析，结合通风瓦斯安全检查及实践总结，提出积极主动防范瓦斯事故的措施与建议。
Provided with two air inlet and an outlet and inlet settings active bezel, you can open or close the tailgate to achieve besides the dust model and natural ventilation mode;
机身设置有两个进风口和一个出风口，进风口处各设置有活动挡板，可通过开启或关闭挡板实现除沙尘模式及自然换气模式；
Provided with two air inlet and an outlet and inlet settings active bezel, you can open or close the tailgate to achieve besides the dust model and natural ventilation mode;
机身设置有两个进风口和一个出风口，进风口处各设置有活动挡板，可通过开启或关闭挡板实现除沙尘模式及自然换气模式；
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