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单词 diameter
释义 diameter
[dī`am·ǝd·ǝr]
MATHEMATICS
1. A line segment which passes through the center of a circle, and whose end points lie on the circle.
2. The length of such a line.
3. For a conic, any straight line that passes through the midpoints of all the chords of the conic that are parallel to a given chord.
4. For a set, the smallest number that is greater than or equal to the distance between every pair of points of the set.
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