结果表明，蜗室中间的主流速度在不同转速下均呈抛物线型分布；
The results clearly document that the curves of vertical and main velocity in the middle area of the volute are parabolic at all running speeds.
本文结合状态重构方法与最优点控制方法，从而实现对抛物线型分布参数系统的最优点控制。
Due to this need, the dissertation combines the state reconstruction method and the optimal point-wise control method to realize the optimal point-wise control for the parabolic DPS.
现场测试结果表明，台背土压力大致呈“抛物线型”分布，与库仑土压力理论的线性分布不同。
The results of field test indicate that the earth pressure of abutment, different from linear distribution of Coulomb's, acts as parabolic type.
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