inner passage meaning in Chinese

内部通道
内航道

Aiming at the problems of smoke control and hvac fire protection in civil building design , analyses some provisions in the current national standards and codes for smoke extraction in inner passages , setting of fire dampers in hvac systems and setting of pressurising air supply systems in upright evacuation passages for underground and semi - underground spaces , and gives the author ' s personal opinions
摘要针对民用建筑工程设计中遇到的防排烟及通风空调系统防火问题，分析了现行国家标准关于内走道排烟、通风空调系统防火阀设置、地下室及半地下室竖向疏散通道正压送风系统设置等的相关规定，并提出了个人见解。