- oblique axes
- oblique coordinate system
- oblique coordinates system
- 斜角: oblique angle; bevel angle
- 斜角坐标: oblique coordinates
- 时角坐标系: hour angle system of coordinate
- 直角坐标系: cartesian axes; rectangular coordinate system; system of rectangular coordinates; the cartesian coordinate system
- 直角坐标系统: rectangular coordinate system
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