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一、概况大雁位于我国北部的严寒地区,室外最低气温低达-45℃～-52℃。取暖建筑物(如住宅、办公室、教室、礼堂等)通常把砖外墙砌成49厘米厚,然而在北墙和严冬主导风向一边的外墙在严冬季节
I. Overview Wild geese are located in the severe cold regions of northern China. The minimum outdoor temperature is as low as -45°C to -52°C. Heated buildings (such as houses, offices, classrooms, auditoriums, etc.) usually have a brick wall of 49 cm thick, whereas the outer walls of the north wall and the harsh winter dominate the wind direction in the winter season.