quadrics

例句：

1. 1.Quadrics are used in computer graphics to represent rotations and translations.
   四元数在计算机图形学中用于表示旋转和平移。
2. 2. The engineer used quadrics to calculate the trajectory of the spacecraft.
   工程师使用四元数来计算宇宙飞船的轨迹。
3. 3. In robotics, quadrics are often used to control the movement of robotic arms.
   在机器人学中，四元数通常用于控制机器人手臂的运动。