Euler-angles的用法和樣例：
例句
- This is due to the fact that Euler angles are always expressed relative to the global coordinate system.
這歸咎于歐拉角總是以球坐標系表示。 - The differential equations of equilibrium of the constrained rod are established taking Euler angles as variables to describe the attitude of the cross section.
以描述截面姿態(tài)的歐拉角為變量，建立受約束彈性桿的平衡方程。
