General ventilation, local ventilation, task air supply, air distribution, air supply, exhaust.
全面通风，局部通风，岗位送风，气流组织，送风，排风。
2
The supply of fresh air in the existing air conditioning and ventilation system directly affects the working environment.
现有建筑物中央空调通风系统的新风供应情况，直接关系到人们的生活工作环境。
3
Presents general principles and forms for the design and selection of air-conditioning and ventilation system, involving kitchen air extraction and spot fresh air supply systems.