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由于黄赤交角的存在,地球在公转轨道的不同位置,地表接收太阳垂直照射的点(简称太阳直射点)会在南北回归线之间移动。太阳直射点的移动规律只看课本中的文字表述和示意图很难理解,而将太阳直射点的回归运动图由静态的改
Due to the existence of the Yellow River Cross, the Earth’s orbit at different positions in the Earth’s surface to receive vertical solar radiation point (referred to as the direct sun) will be moving between the Tropic of Cancer. The law of movement of the sun’s direct point is difficult to understand only by the textual representation and the schematic of the textbook. The regression motion map of the direct sun’s point is changed from static