The paper presents the graphic method of solution of the intersection of right elliptic cone with plane by rotation of auxiliary planes at a certain Angle.

提出一种将辅助平面旋转某个特定的角度图解正椭圆锥面截交线的方法。

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In profile, the forehead and muzzle touch on the same vertical plane of a right Angle whose horizontal plane is the top of the skull.

从侧面看，额头和口吻处于同一垂直平面上，与头顶的水平面正好成直角。

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This article introduced a general method of drawing plane right-angle coordinates in Borland c++Builder 6 and explained how to use its code in detail.

针对直角坐标系下圆周截面形状误差评价，介绍了一种圆柱体截面圆度误差的测量与评定方法。

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Another way to represent a point in a plane is I've got a radius and I've got an angle from the x-axis, right, and that's a standard thing you might do.

平面上面的点的方法,也就是极坐标,上面那种方法其实是，如果你们喜欢我这么说的话,笛卡尔坐标表示法。

麻省理工公开课 - 计算机科学及编程导论课程节选