近年来出现了许多智能化液位控制方法，不同程度上改进了结晶器液位的控制效果。
In recent years, many intelligent level control methods appeared to improve the controlling effect of the mould level.
近年来出现了许多智能化液位控制方法，不同程度上改进了结晶器液位的控制效果。
In recent years, many intelligent level control methods appeared to improve the controlling effect of the mould level.
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