混凝土卸载及再加载的模型有直线式、折线式和曲线式等。
Concrete unloading and re-loading models consist of linear models, multi-linear models and curve models.
当机组采用先慢后快的两段折线式导叶关闭规律时，蜗壳进口压力只有单峰。
Secondly, if the two-segment closing law, the guide vanes close slowly first and then faster, only one pressure peak will be left.
短行程控制是热轧粗轧调宽过程中改善带钢端部形状、减少成材率损失的主要方法，而宝钢某热轧机组采用的传统的折线式短行程控制效果较差。
Short Stroke Control(SSC) is the main method to optimize the shape of strip ends and reduce metal loss in hot roughing, but the traditional broken line SSC model was not effective enongh at Baosteel.
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