8字曲线,赤纬时差图,地球仪8字形曲线,地球正投影仪
What he introduced included oval projection, stereographic projection, analemma and scenography etc. 关于投影几何，他带来的有椭圆投影、球极投影、平行正投影和透视法等。
The answer is no, and the shape traced out by the Sun over the course of a year is called an analemma. 答案是不会，太阳一年中运行的轨迹叫做太阳的八字曲线。
The Sun will appear at its highest point of the analemma during summer and at its lowest during winter. 太阳在夏天会出现在八字曲线的最高点，在冬天则出现在最低点。
One simple use for this is to display the Sun's "analemma" - the "figure eight" shape traced out by the Sun at noon over the course of a year. 一个例子是显示太阳的“日行迹”-你一年每天在同一时间记录太阳在天空的位置,就得到太阳的8字型轨迹。
Explanation: An analemma is that figure-8 curve you get when you mark the position of the Sun at the same time each day throughout planet Earth's year. 说明：日行迹是一条8字形的曲线，标示了地球全年中每天同一时间太阳所在的位置。
