求翻译：随着对醋酸纤维素的性能的深入研究和了解，对其质量指标的要求越来越高和严格，对设备的要求也越来越高，如何得到指定取代度的、取代度均匀的产品是人们一直关心的问题。所以对醋酸纤维素制备和生产技术和工艺难点的研究是目前的关键。是什么意思？

With in-depth study and understanding of the performance of cellulose acetate, the requirements of its quality indicators and strict requirements of the equipment have become more sophisticated, how to specify the degree of substitution, degree of substitution of a uniform product People have been i

The cellulose acetate as the performance of the in-depth study and understanding of the increasingly high demands of quality and strict, and the requirements for the device is also high, and how to get more and more replaced by a substitute, the product is evenly has always been concerned about the

Along with to the acetyl cellulose performance thorough research and the understanding, is more and more strict to its qualitative index request Gao He, more and more is also high to the equipment request, how obtains assigns the substitution value, the substitution value even product is the people

With further research and understanding on properties of cellulose acetate, on quality indicators of increasingly demanding and strict, is getting higher and higher demands on equipment, how to get a specified degree of substitution, substitution of uniform products that people are concerned about t

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