The existing problems of traditional PVA drying were analyzed, the paddle two-grade drying process for PVA and its applications were presented.
分析了传统聚乙烯醇干燥工艺存在的问题，介绍了聚乙烯醇桨叶两级干燥工艺和应用情况。
At the same time, the existing problems of the applications of genetically engineered strains for food fermentation industry were pointed out, and the prospects of the application are forecasted.
同时指出应用基因工程技术构建的噬菌体抗性菌株应用于食品发酵工业中所存在的问题，并对其应用前景作了展望。
This paper reviews developments of emergency system, including its development and applications. Comments on existing problems and trends of progress are discussed.
综述了目前应急系统的设计开发和应用，讨论了应急系统存在的问题及其发展趋势。
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