椭圆差分方程的英文

• elliptic difference equation

• 椭圆:    oval; oval-shaped; ellipse; ...
• 差分:    difference
• 方程:    equation
• 椭圆型差分方程:    elliptic difference equation
• 差分方程:    difference equations; differential equation; finite difference equation; finite-difference equation; recurrence relation