一、街道的走向并非特指我国,而是具有普遍意义教材中的图示反映出房屋的朝向为东南和西南,这是从光照的角度来看街道(或建筑物)的朝向的,这个夹角适用于全球,而不是局限于我国和北半球。二、街道的走向应与太阳直射点的移动结合起来讲解为什么街道走向与子午线成30°～60°夹角而不是20°～70°呢?这要从黄赤交角的大小讲起。由于黄赤交角的度数约 First, the direction of the street is not specific to China, but it has a universal significance. The illustration in the textbook reflects that the orientation of the house is southeast and southwest. This is the orientation of the street (or building) from the light point of view. Corners apply to the globe, not to China and the northern hemisphere. Second, the direction of the street should be combined with the movement of the sun’s direct point to explain why the street direction and the meridian angle of 30 ° ~ 60 ° instead of 20 ° ~ 70 ° it? This should start from the size of the red cross angle. Due to the degree of yellow angle