1)  parabolic type of curve

2)  parabolic vertical curve

3)  parabolic curves

4)  parabolic variable-thickness double-curved arch dam

1.
CAD is used to perform the calculating and drawing jobs of the parabolic variable-thickness double-curved arch dam of Nanzhang Xiakou hydropower project, such as the calculation of the arc length and the thickness and area of the arch rings, the volume of the dam etc.

5)  parabola [英][pə'ræbələ]  [美][pə'ræbələ]

1.
By introducing the characteristic of new technologies about bubbling atomizing small oil gun, direct firing parabola burners of pulverized coal,large size duff store\|house, the author shows the application foreground and advantage of technique and economy about these new technology on old 125 MW,200 MW set in the new electrovalency policy.

6)  hyperbolic parabola

 抛物型偏微分方程parabolic type，partial differential equation of   偏微分方程的一类。最典型的是热传导方程   （a＞0）  （1）基本解是点热源的影响函数。若在t＝0时在（ξ，η，ζ）处给定单位点热源，即u0（x0，y0，z0，0）＝δ（ξ，η，ζ）（δ为狄拉克函数），则当t＞0时便引起在R3的温度分布，这就是基本解。用傅里叶变换可得到它的表达式        热传导方程初值问题的解可用基本解叠加而成，即的解为   极值原理：一个内部有热源的传导过程，它的最低温度一定在边界上或初始时刻达到。更强的结论是 ：如果t＝T时在Ω内某一点达到最低温度 ，则在这个时刻以前（t＜T时）u≡常数  ；又：若最低温度在t＝T时边界¶Ω上某点P达到，则在这点上｜P，Τ＜0（n为外法线方向）。