With the method of adding nano - particles during extracting stage , dry uhmwpe gel fiber dispersed with nano - particles is prepared , after multi - step hot drawing , modified uhmwpe fibers are prepared 采用萃取加入的方式制成了納米粒子均勻分散的uhm認(rèn)甲e干凍膠纖維,然后經(jīng)過(guò)多級(jí)熱拉伸,制成納米粒子改性u(píng)hm從甲e纖維。
Compared with the method of adding nano - particles during dissolving stage , by the method of adding nano - particles during extracting stage , there have no big agglomerated particles in fibers owing to the limit of pole size in uhmwpe gel fiber 與溶解階段加入納米粒子相比,在萃取階段加入納米粒子,由于uhmwpe凍膠纖維內(nèi)微孔尺寸的限制,纖維內(nèi)沒(méi)有較大尺寸的納米粒子團(tuán)聚體存在。
In the data extracting stage , aiming at interfacing of knowledge discovery algorithms to large database management systems , we present a family of generic , set - based , primitive operations for knowledge discovery in databases . we show how a number of well - known kdd classification algorithms can all be computed via our generic data extractors 該接口利用一組基于sql語(yǔ)言的數(shù)據(jù)抽取器實(shí)現(xiàn)為數(shù)據(jù)挖掘算法抽取必要的統(tǒng)計(jì)數(shù)據(jù),避免了直接對(duì)大型數(shù)據(jù)庫(kù)的數(shù)據(jù)進(jìn)行調(diào)用,使得對(duì)大型數(shù)據(jù)庫(kù)進(jìn)行快速數(shù)據(jù)挖掘成為可能。