octant / ˈɒk tənt /
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octant 的定义
n. 名词 noun- the eighth part of a circle.
- Mathematics. any of the eight parts into which three mutually perpendicular planes divide space.
- an instrument having an arc of 24°, used by navigators for measuring angles up to 90°.
- the position of one heavenly body when 45° distant from another.
- Astronomy. the constellation Octans.
更多octant例句
- Thus fig. 59 conveniently represents an octant of the wave surface, which cuts each coordinate plane in a circle and an ellipse.
- It is the sextant or some member of the sextant family - such as the quadrant, octant, etc.
- A third staff (or an octant) was fixed at the end of the horizon-staff, and upon it the angle observed could be read off.
- The third plane will lie horizontal or equatorial, and will divide each of these quarters into an upper and lower octant.
- Excluded, of course, are those instruments normally made of wood, such as the octant and the mariners quadrant.