平面角的英文：
plane angle

plane是什么意思：
n. 飞机；平面；程度，标准，水平，境界；刨子
v. 用刨子刨平；掠过水面
adj. 平的；平坦的

The plane will take off soon.
飞机马上就要起飞了。

They planned to highjack a plane.
他们计划劫持一架飞机。

They announced his plane was delayed.
广播通知他所乘的航班晚点了。

Are you going to America by boat or by plane?
你到美国是坐船还是坐飞机？

The plane was given clearance to land.
飞机被给予着陆的许可。

angle是什么意思：
n. 角；角度；观点
v. 垂钓，钓鱼；形成角度，调整角度；着眼于；针对

The angle of incidence equals the angle of reflection.
入射角等于反射角。

angle of heel in tur
回旋倾侧角

initial incidence angle
初始入射角

edge cutting angle
边锉纹斜角

stalling angle of attack
失速迎角