subpoint meaning in Chinese
投影点
下点
Examples
- The distinct trait of sun synchronic orbit satellite is that there will be the same sun conditions in the subpoint of the satellite wherever the satellite is , it benefits the earth reference equipments . and the regressive orbit satellitr ' s trait is that the satellite can cover the earth periodic , it benefits the dynamic reconnaissance . because of these merits , the sun synchronic and regressive orbit become one of the most popular orbit types
太阳同步轨道的主要特点是卫星在任一时刻其星下点的阳光条件基本相同，这对卫星上对地仪器的工作是非常有利的。而回归轨道的特点是周期性地覆盖地球，这有利于对地球上动态目标的侦察。由于以上的优点，太阳同步回归轨道成了所有卫星轨道中最常见的轨道之一。