可说明的

A novel endocyclic enamine cyclopentenone annulation was discovered and rationalized as an unusual Nazarov-type electrocyclization, which would have broad applications in the synthesis of natural alkaloids and other heterocycles.

我们在合成路线一、路线二中用的6-6元环系到7-5元环系的还原重排反应，在温和的酸性还原条件下即能发生，这说明在三尖杉碱的生物合成中6-6元环到7-5元环的还原重排步骤是非常有可能发生的；因此，我们的合成路线二中可认为是生物合成过程。

This paper on basis of surface's local principle.Through discussing the Gauss mipping image of the surface's asymptotic curve and the camber between any two directions of surface and the developable surface to illustrate the impact on surface of Gauss mipping.

文章以局部曲面的基本理论为基础，通过对曲面的渐近曲线、曲面上任意两方向的夹角和可展曲面的高斯映射象的讨论来说明高斯映射对曲面的影响。

The relation of the chromatographic retention indices of alkene to topological index,double bond atomic hybridization state index,polarizability effect index of branched chain to double bond atomic,immobile liquid polarity values and column temperatureat different temperatures on different stationary phases was studied.

通过对部分烯烃在不同固定相不同柱温下的1031个样本集的气相色谱保留指数值与其部分参数关系的研究，发现RI与拓扑指数、双键原子杂化状态指数、支链对双键的极化效应指数、固定液极性值及柱温的关系可表示为：^RI=-58.138+57.7460Q-8.2591Q+0.120T+0.807CP+36.460PBD+7.919DHSI(R=0.9989)继以留一法(Leave-one-out，LOO)进行交互检验，相关系数RCV=0.9977，说明所建模型具有良好的稳定性和预测能力，较好地揭示了烯烃类化合物气相色谱保留指数RI随固定相极性、柱温的改变而变化的规律

Bingley, when questioned by Jane, had long ago asserted his blamelessness in the affair; that, proud and repulsive as were his manners, she had never, in the whole course of their acquaintance -- an acquaintance which had latterly brought them much together, and given her a sort of intimacy with his ways -- seen any thing that betrayed him to be unprincipled or unjust -- any thing that spoke him of irreligious or immoral habits. That among his own connections he was esteemed and valued -- that even Wickham had allowed him merit as a brother, and that she had often heard him speak so affectionately of his sister as to prove him capable of some amiable feeling.

尽管达西的态度傲慢可厌，可是从他们认识以来（特别是最近他们时常见面，她对他的行为作风更加熟悉）她从来没有见过他有什么品行不端或是蛮不讲理的地方，没有看见过他有任何违反教义或是伤风败俗的恶习；他的亲友们都很尊敬他，器重他，连韦翰也承认他不愧为一个好哥哥，她还常常听到达西爱抚备至地说起他自己的妹妹，这说明他还是具有亲切的情感。

For the enlightenment of those who are not so intimately acquainted with the minutiae of the municipal abattoir as this morbidminded esthete and embryo philosopher who for all his overweening bumptiousness in things scientific can scarcely distinguish an acid from an alkali prides himself on being , it should perhaps be stated that staggering bob in the vile parlance of our lower class licensed victuallers signifies the cookable and eatable flesh of a calf newly dropped from its mother

这位有着病态精神的审美学兼胚胎哲学家，尽管连酸与碱都分不清，在科学知识上却摆出一副傲慢自负的架子。为了启发那些对市立屠宰场的细节没他那么熟悉的人们，也许应该在此说明一下：我们那些拥有卖酒执照的低级饮食店的俚语小牛崽肉，指的就是打着趔趄的牛崽子280那可供烹调食用的肉。

For the enlightenment of those who are not so intimately acquainted with the minutiae of the municipal abattoir as this morbidminded esthete and embryo philosopher who for all his overweening bumptiousness in things scientific can scarcely distinguish an acid from an alkali prides himself on being, it should perhaps be stated that staggering bob in the vile parlance of our lower class licensed victuallers signifies the cookable and eatable flesh of a calf newly dropped from its mother.

为了启发那些对市立屠宰场的细节没他那么熟悉的人们，也许应该在此说明一下：我们那些拥有卖酒执照的低级饮食店的俚语小牛崽肉，指的就是打着趔趄的牛崽子[280]那可供烹调食用的肉。

For the enlightenment of those who are not so intimately acquainted with the minutiae of the municipal abattoir as this morbidminded esthete and embryo philosopher who for all his overweening bumptiousness in things scientific can scarcely distinguish an acid from an alkali prides himself on being, it should perhaps be stated that staggering bob in the vile parlance of our lowerclass licensed victuallers signifies the cookable and eatable flesh of a calf newly dropped from its mother.

为了启发那些对市立屠宰场的细节没他那么熟悉的人们，也许应该在此说明一下：我们那些拥有卖酒执照的低级饮食店的俚语小牛崽肉，指的就是打着趔趄的牛崽子那可供烹调食用的肉。

Because of the effect of catabolite repression and synergistic mechanism between pructs, the degradation of succinonitrile is promoted while the degradation of alkanes is inhibited in the mixed system of culture medium.

废水中烷烃质量浓度低，烷烃降解菌不能发挥其高效的降解作用，丁二腈质量浓度较大，降解效果明显，9h降解率可达到100%；腈纶废水经混合菌9h处理后，田氏去除率仅为29%，说明实际废水是个很复杂的体系，仅依靠个别高效菌株难以达到理想的整体处理效果，必须构建更多种类的具有协同作用的高效菌群，才能在实际应用中取得满意的结果。

At the beginning of this thesis, the author gives the definition and the equivalent definition of convex function, and then proves the equivalent relationship between them. Secondly the author proposes the decision theorem of convex function which provides a judgment basis of whether a function is a convex function. Thirdly the author summarizes and proves the convex function's operational ,basic , differential and integral property. Finally the author proves several famous convex function inequalities, such as Jensen inequality, Holder inequality, Cauchy inequality and Minkowski inequality. The author also provides the application of these inequalities and illustrates the importance of convex function's basic inequality and integral property in the proving process.

本文开始给出了凸函数的定义及等价定义，并证明了它们之间的等价关系；接着提出了凸函数的判定定理，对一个函数是否是凸函数提供判断依据；然后对凸函数的运算性质、基本性质、微分性质、积分性质四个方面的性质进行了总结，并给予了证明；最后证明了凸函数的几个著名不等式詹森不等式、赫尔德不等式、柯西不等式和闵可夫斯基不等式以及这几个不等式的应用，并举例说明凸函数的基本性质和积分性质在不等式证明过程中的重要作用。

The name of the city dates back to its founder, the Macedonian leader Alexander the Great, he came to Egypt in 332b.c, and its one of the most beautiful Mediterranean citiesThe Graeco-Roman museum built in 1893,most of its pieces date back to the Graeco-Roman period, its also includes some pharaonic monuments.

说明： 这个名字的城市可以追溯到其创始人，领导者的马其顿亚历山大大帝，他来到埃及332b.c，它的一个最美丽的地中海城市旅游行程从您的酒店在开罗7我会向您可在亚历山大访问希腊罗马博物馆建於1893年，其大部分作品追溯到希腊罗马时期，它也包括一些法老遗址。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。