A surface having parabolic sections parallel to a singlecoordinate axis and elliptic sections perpendicular to that axis.
抛物面一种有与单坐标轴平行的抛物截面和与该轴垂直的椭圆截面的平面。
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Istanbul conference spokesman Ghalioun said one major benefit of the council to the Syrian opposition would be to provide a single body with which other countries could coordinate.