denseness of set 中文意思是什麼
denseness of set
解釋
集的密度-
It set up the development of the world recognized high performance nanofiltration composite membrane of aromatic polyamide, on the basis of reviewing the development, the importance in the membrane separation technology, the classification, the fabrication technique and the current development of the research and the application of the nanofiltration membrane. polysulfone was chosen as the material for making the porous substrate because of its excellent compress - to - denseness resistance, its cheap price and its great availability. by fabricating an ultra thin polyamide functional layer on the polysulfone substrate through interfacial polymerization taking piperazine as the monomer in aqueous phase and trimesoyl chloride as the monomer in organic phase, high performance nanofiltration composite membranes of ultra low pressure and ultra high permeating flux were prepared
選擇耐壓密性能優良，價廉易得的聚碸材料為制備復合膜基膜材料，哌嗪為水相單體，均苯三甲酰氯為有機相單體，通過界面聚合反應在基膜表面形成超薄功能層，制備了超低壓高通量聚哌嗪均苯三甲酰胺聚碸納濾復合膜，以0 . 1 mgso _ 4溶液為測試液，所得高脫鹽平板復合膜（ ）在0 . 4mpa下，脫鹽率為96 . 1 ，通量達85 . 2l -
Chapter two study iteration of a serial of polynomial, discussed the sufficient and necessary conditions and denseness of the julia set, the relative random dynamical system is constructed by some high degree polynomial. in addition, it discuss the mandelbrot set of a kind of polynomial
本文的第二章主要研究多個函數的特定迭代序列，討論了高次多項式的隨機復動力系統的julia集的連通的充分必要條件以及稠密性問題，同時還討論了一類多項式函數的mandelbrot集。
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