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We discussed the syntheses of two different types of plant alkaloids in this thesis. In part A, we aimed at total syntheses in two kinds of aporphine alkaloids, lirioferine and boldine. In part B, we developed a tactic about radical cyclization in polyhydroxylated piperidine synthesis.

中文摘要本篇论文中探讨了两种不同种类植物碱的合成，在A部分中，我们针对阿朴吩类天然物中的鹅掌楸啡碱与波儿丁碱做了各自的全合成研究；在B部分中，我们发展了一种自由基环化策略运用在含多羟的哌啶类化合物之合成上。

A pistil composed of two or more united carpels .Having fruit or pistils with two or more carpels .

果为多心皮的，有多子房雌蕊的有带两层或更多层心皮的果实或雌蕊的

These gears are manufactured with widths of their teeth (as measured along the pitch circle) such that when two such gears are installed with a center distance consistent with their standard pitch diameters, the teeth of the two gears will mesh "well".

生产齿轮的时候要根据齿的宽度，这样当两个齿轮装配成中心距离与分度圆直径相吻合的时候，两个齿轮的齿就可以正确啮合。

Closest point to the problem is for two-dimensional coordinates of the point of the problem, the algorithm is to be planar point set on the S linear divided roughly equal to the size of two sub-sets of S1 and S2, we selected a vertical line l : x = m as a separate line.

最接近点对问题是求二维坐标中的点对问题，该算法是为了将平面上点集S线性分割为大小大致相等的2个子集S1和S2，我们选取一垂直线l：x=m来作为分割直线。

Experimental results of Cone-Torus planar point classification and speaker-independent isolated digital word speech recognition show that DSFPN requires two order of magnitude less training time than the Multilayer Perceptron, and has higher training speed than the improved CPN, while the best testing accuracies achieve 92.25% and 98.7%, better than the two networks.

Cone-Torus平面点分类和非特定人孤立数字语音识别的实验结果表明了DSFPN的优越性能，其训练时间比多层感知器少2个数量级，训练速度比改进的CPN更快，最好测试正确率分别达92.25%和98.7%，高于另外2种神经网络。

In this method,the image is transformed two times with anamorphic fractional Fourier transform and modulated two times by random phase function in the original image plane and the fractional domain separately.

对要加密的图像分别进行两次变形分数傅里叶变换和两次随机相位函数调制，使加密图像的密钥由原来两重增加到六重。

At an angle; especially connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face.

倾斜的；尤其是连接平面图上两个不相邻的角落的，或连接多面体任意两个不在同一面上的顶点的直线的。

It did not appear to be the duty of these two men to know what was occurring at the centre of the bridge; they merely blockaded the two ends of the foot planking that traversed it.

显然了解桥的中间正在发生着什么不是这两个人的职责；他们只不过是阻止在桥的两端想要穿越桥的脚步。

Two He-Ne lasers have been designed in experiment,one with simplest 2D axisymmetric folded-combined cavity that are composed of a concave-plano-concave folded cavity and a plano-concave cavity , and other with simplest 3D axisymmetric folded-combined cavity that are composed of two concave-plano-concave folded cavities and a plano-concave cavity.

本文实验设计了由一个凹-平-凹折迭腔与一个平凹腔组合的二维轴对称折迭-组合腔型He-Ne激光器及由两个凹-平-凹折迭腔与一个平凹腔组合的最简单立体轴对称折迭-组合腔型He-Ne激光器。

The effect of improvement on planosol by the application of the four types of ploughs suggest that there were hard clods between two chisel if the cultivate depth is less than 40cm; there are hard triangle clods between two chisel if the complete deep cultivate reach 40 cm and soil hardness is 20～40kg/cm〓 if the cultivate horizon is shallow or below 20 cm, the expected effect of improvement will not be obtained.

3应用三段式心土犁的土效果。不同改土机械改良白浆土对比试验结果表明：各种深松耕深不足40cm，且深松铲之间存在硬隔，达不到预想的改土效果。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。