For example, one triangle shape was cut out crossing the grid between the first floor and the second, and placed beyond the X and Y coordinate plane.
例如，一个三角形的形状被切断穿过一层和二层之间的网格，并放置在一个平面和坐标平面之外。
2
The formula for area of triangle on ellipsoid by means of geodesic coordinate is derived in this paper.
推导出用三顶点的测地坐标计算地球椭球面上三角形面积的公式。
3
Connecting every spot to form a triangle, and calculated trend coordinate and deposition value of the spots, finally calculated atmospheric dust deposition.