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ramp rate limit 调节速率限制
Therefore, an effective combination of ramp metering and variable speed limit control is important to achieve a good performance.
由此，匝道调节率与可变速度限制间高效的联合控制对于提高道路性能显得尤为重要。
It has four start mode: the ramp voltage start, the limit current start, the ramp speed start and the discrete frequency start.
所研究的软起动器具备四种起动方式：电压斜坡起动、限流起动、转速斜坡起动和分级变频起动。
In this paper, we carefully analyze the characteristics of density limit disruptions during current ramp-up, flattop and ramp down phases.
本文详细分析了出现在电流上升段，坪段及下降段密度极限破裂的特征。
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