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对化工或医药企业中的精确配比投料进行了研究，设计了一种利用慢进值和提前量进行控制的系统。实践证明，该系统对生产中的自动投料控制精确，有很强的实用性。
Research on the accurate compounding in chemical industry or pharmaceutical industry has been done, and a system that uses slow-down and advanced control is designed. Practice has proved that the system of automatic feeding in the production of accurate control, there is a strong practicality.