linear adj. 1.線的,直線的。 2.長度的。 3.【數(shù)學(xué)】一次的,線性的。 4.【動(dòng)、植】線狀的;細(xì)長的。 5.由線條組成的,以線條為主的,強(qiáng)調(diào)線條的。 linear amplification 直線放大。 a linear equation 一次方程式。 a linear leaf 線形葉。 linear arts 線條藝術(shù)。
By definition an exclusively difunctional monomer can only give rise to a linear polymer . 按照定義,一個(gè)特定的雙官能單體,僅僅能得到線型聚合物。
As new kinds of non - linear polymers , dendritic polymers have formed a promising kind of functional materials and have been successively used in various applications due to their characteristics including low viscosity , better solubility in conventional solvents , and nano - dimension of single molecule 摘要樹形聚合物高度支化,與線形結(jié)構(gòu)的聚合物相比具有較低的粘度及良好的溶解性,而且其單分子尺寸通常在納米尺度,在多方面具有廣闊的應(yīng)用前景。
The reason was that pma was linear polymer and that the incompatibility of pdms and pma leaded microphase separation . additional , xps analyzed the three kinds of elements in surface and interior of ipn , the results indicated that the content of the elements c , si and 0 were misdistribution and different in surface as well as in interior of ipn . the reason was the poor compatibility of pdms and pma , and found that amount of initiator and the reaction rate effected the distribution 另外,本論文還通過xps電子能譜儀對工pn材料的表層和內(nèi)層的化學(xué)元素c 、 51 、 o進(jìn)行分析,發(fā)現(xiàn)表層與內(nèi)層中的三種元素的含量并不相同,也沒有規(guī)律可循,說明在形成ipn結(jié)構(gòu)過程中,由于兩相相容性不一致,它們的微運(yùn)動(dòng)趨向于兩相分離,同時(shí)發(fā)現(xiàn)引發(fā)劑用量和反應(yīng)速度對元素分布影響較大。
The fractal is a geometrical figure with self - similar symmetry , and it is an important tool for characterizing irregular structures in nature that are self - similar on certain length scales . for example , the koch curves can be viewed as a mathematical model for coastlines , percolation model can be used to mimic mixture of mental and insulator , self - avoiding walks can serve as a model for linear polymers , and rock fracture mode can stimulate the process of brittle fracture of rock , and so on 分形是具有自相似對稱性的幾何圖形,可用來模擬自然界中在一定尺度范圍內(nèi)具有自相似對稱性的不規(guī)則結(jié)構(gòu),如koch曲線可用來模擬海岸線,滲流模型可模擬金屬絕緣體混合物,自回避無規(guī)行走模型可模擬線性聚合物,巖裂模型可模擬真實(shí)巖體的脆性破裂等。