Air Convection Embankment Passive Cooling Strategies 片块石路基 Crushed-rock Embankment 通风管路基 Ventilation Ducts Embankment 片块石+通风管路基 Crushed-rock + Ventilation Ducts Embankment 弥散式通风管路基 Diffuse Ventilation Ducts Embankment XPS板路基 Extruded Polystyrene (XPS) Plate Embankment 热棒路基 Thermosyphon Embankment XPS板+热棒路基 XPS Plate + Thermosyphon Embankment 单向导热板路基 Semi-conductive Plate Embankment