内受热面的英文

• internal heating surface

• 内:    inner; inside; within
• 受热面:    heating surface
• 受热面:    generating surface; heat-absorbing surface; heat-delivery surface; heating surface; heatingsurface; hot area
• 辐射受热面:    radiant heating surface; radiation heating surface; radiation heating-surface
• 附加受热面:    auxiliary heating surface