The thesis explain the production process and process specification of the raw material pretreatment, scutching. dressing. drawing. roving. spun yarn.
阐述了原料预处理、清花、梳棉、并条、粗纱、细纱的生产工艺和工艺原则。
It was studied that technique conditions in cattle placenta processing by proteinase, including suitable enzyme types, hydrolytic time, hydrolytic temperature and pretreatment methods of raw material.
研究了酶法加工牛胎盘时酶的选择、水解时间、水解温度及原料的预处理等工艺条件。
The pretreatment of the raw material by magnetic separation to prepare the qualified ultrapure iron concentrate for producing permanently magnetic ferrite is described.
介绍了磁选方法预处理原料，制备适合于永磁铁氧体生产的合格超纯铁精矿。
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