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Sodium thiosulfate and carbon disulfide were used as sulfur sources in water and absolute alcohol systems, respectively.

在水溶液体系和乙醇溶液体系中,于常温常压下不加入任何催化剂,用γ射线辐照技术可以成功制备出纳米ZnS晶体,其中硫代硫酸钠和二硫化碳分别为上述两体系的硫源。

Acenaphthene was dehydrogenated to afford acenaphthylene by photochemical reaction with N bromosuccinimide in benzene with the addition of quinoline at room temperature and atmospheric pressure was studied.

在常温常压下,以苯作为溶剂,加入喹啉,使苊与N-溴代丁二酰亚胺发生光化学脱氢反应生成苊烯。

A novel method for the synthesis of α-bromo acetophenone s by the reaction of 1,3-dibromo- 5,5-dimethylhydantoin with p-toluenesulfonic acid in methanol at 20~60 ℃ was described.

报道了使用1,3-二溴-5,5-二甲基海因和对甲苯磺酸在甲醇中和20~60℃的温和条件下合成α-溴代苯乙酮的新方法。

In this case, the usual formula for a metabolic acidosis (which assumes full compensation) may not be valid.

在这种情况下,惯常代谢性酸中毒公式(这些公式的前提是完全代偿)就不使用了。

Following by the idea of discontinuous right-hand sides in SIDEs, the whole framework is studied based on the spring-mass model, and some good properties are given. Furthermore, two schemes are presented: explicit scheme and additive operator splitting scheme.

借助SIDEs不连续右端的基本思想,将整个框架在弹簧体模型下进行考虑,给出了一些好的性质,并时该扩散方法提出了两种数值求解方案:显式方案和可加算子分裂的迭代格式。

The fast Fourier transform technology is adopted to calculate the dyadic Green's operator and its adjoint operator during each iteration of CSI, which ensures the high efficiency of the algorithm in stratified medium.

CSI的每一次迭代过程均采用快速Fourier变换技术计算并矢Green函数算子及其共扼算子,确保了该算法在三维层状介质情况下的高效率。

The novel of haing generation " liver mosses silk of De Baijia " figure is in medium Alick to accept a process of China ceaselessly, had analysis and illumination, announced if why accepting aesthetic angle to fall to be defined again and again,the analysis of work character is.

哈代的长篇小说《德伯家的苔丝》中的亚历克形象在中国的不断接受过程,进行了分析和阐释,揭示了作品人物的分析是如何在接受美学的角度下被一再定义的。

Soon after the Crusade was over, Louis VII and Eleanor agreed to dissolve their marriage, because of Eleanor's own desire for divorce and also because the only children they had were two daughters - Marie and Alix . The royal marriage was annulled on 11 March 1152, on the grounds of consanguinity within the fourth degree.

第二次十字军东征刚刚结束,路易七世与埃利诺便协议结束了这场婚姻,既因为埃利诺自己希望离婚,也因为两者婚姻仅生下了两个女儿玛丽和阿利克斯。1152年3月11日,这场王室联姻因存在四代内的血缘关系而宣告取消。

The originalprocedure has subsequently been replaced by milder and more environmentallyfriendly conditions. We tried to alkylate 3,4,5-trimethoxytoluene by2-allylphenylbenzyl ether in the presence of N-bromosuccinimide.

本实验是在溴代琥珀酰亚胺的作用下使2-烯丙基苯基苄基醚产生苄正离子,苄正离子亲电进攻3,4,5-三甲氧基甲苯从而进行傅氏烷基化反应的。

In this paper, two-point ray tracing is studied for three-dimensional arbitrary interface. from Fermat's principle, traveltime is expanded in the initial ray path according to one order Taylor's incompletion expansion. Then, the algorithm of total iterative ray tracing in three dimension is derived.

作者在文中对三维任意界面情况下的两点间射线追踪问题进行了研究,从Fermat原理出发,对射线路径上的旅行时,采用一阶Taylor不完全展开等办法,推出了三维情况下计算射线路径的整体迭代算法。

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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?