In addition to the planned primary and secondaryventilation corridors, other smaller corridors will also be added to the system.
王说，除了规划主要和次级通风廊外，这个系统还包括其他小一点儿的通风廊。
2
The object was implemented in a low energy construction method with controlled ventilation (displacement ventilation in the classrooms) including the design for a natural secondaryventilation system.
其目标是采取一个能够控制通风的低能耗施工方法（在教室进行通风），包括自然二次通风系统的设计。
3
The secondary outcomes were duration of mechanical ventilation, occurrence of complications and survival to discharge from hospital.