This phenomenon must have their rational place, but it is also needed to rectify a deviation in some degree and remains to be normal.
这一现象有其必然、合理之处，也存在一些需要纠偏、有待规范的问题。
A electrohydraulic servo rectify deviation control system, which possesses derivative control law for the web deviation on the winder of paper making machine, is proposed.
本文针对造纸机的卷取跑偏问题，提出一种具有超前控制规律的电液伺服纠偏控制系统。
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