新型下料机是利用变频振动实现低应力下料的，针对需要建立振动的有效测控系统的问题。
A new type of precision cropping machine utilizes variant frequency vibration to crop bar precisely with low stress, an system of measure and control of vibration in the machine is necessary.
分析表明灰色预测控制适用于大跨预应力混凝土桥梁的施工控制。
The results indicate that the grey predictive control system is adapted to the construction control for the long-span PC Bridge.
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