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The dilational viscoelastic properties of partly hydrolyzed polyacrylamide and alkyl benzene sulfonate in the absence or presence of electrolyte were investigated at the decane water interface by means of longitudinal method and the interfacial tension relaxation method.

采用小幅低频振荡和界面张力弛豫技术,研究了部分水解聚丙烯酰胺(Mo-4000)和阴离子表面活性剂2-丙基-4,5-二庚基苯磺酸钠(377)体系在癸烷/水界面上的扩张黏弹性质,并考察了电解质对体系界面流变性质的影响。

The cannas natural antistaling agent is separated by column separation methods and recrystallization. Fraction Ⅱ-2 is analyzed by GC-MS. Three compounds which are n-Octadecane, n- Heptacosane and Decanoic acid heptyl ester were identified.A new way of litchi preservation is provided in this paper.

本论文还对此美人蕉天然保鲜剂进行了分离研究,先对其乙醇提取物进行柱层析粗分,然后对组分Ⅱ进一步细分,对其中的组分Ⅱ-2进行了GC-MS分析,鉴定出3个物质,它们分别是正十八烷(n-Octadecane)、正二十七烷(n-Heptacosane)和癸酸庚酯。

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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?