矩形翼 meaning in Chinese

rectangular wing

From this compare , we can know that the lunate fin has higher efficiency than the rectangle fin
为研究尾鳍的几何形状对水动力性能的影响，本论文选取了矩形翼和月牙形翼进行比较。
It shows the choice of nature . of course it is almost impossible trying to get the performance only by imitating the shape of fish
结果证明，仿金枪鱼的月牙形尾鳍在推进性能上要远好于简单的矩形翼，由此，也反映了自然选择的结果。