The preparation and characteristics of PFS, and research status and development trend of modified PFS are summarized.
综述了聚合硫酸铁的制备方法和特点，以及改性聚合硫酸铁的研究现状与发展趋势。
The challenge, therefore, was to confidently report the observed middleware performance characteristics with a minimal budget for tools and preparation effort.
因此，这里的挑战是确信地 报告已观察到的中间件性能特性，同时将用于工具和准备工作的预算保持最小。
In this paper, the preparation methods and characteristics of sodium diacetate were reviewed. Its application in the leather process were introduced.
本文综述了双乙酸钠的制备方法和特点，并介绍了其在皮革加工中的应用。
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