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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。

We have had the extensive studies on theα-acetyl-α-carbamoyl ketene--acetals and its further applications, for example, their adols condensations with aldehydes giveα-alkenoyl-α-carbamoyl ketene--acetals which can be utilized as the 1,5-bielectronic five-carbon components to react with various binucleophlilic species in a [5+1] annulation.

我们小组在以前的工作中对α-乙酰基-α-胺甲酰基二硫缩烯酮在合成中的应用进行了深入的研究，如与醛缩合生成α-烯酰基-α-胺甲酰基二硫缩烯酮，将其作为1，5-双亲电五碳合成子的[5+1]成环策略等。

Generally speaking, the reaction types involvingα-oxoketene--acetals mainly include the regioselective addition-aromatization with organometallic reagents, conjugate addition-cyclization with nitrogen nucleophilicspecies, nucleophilic reactions ofα-carbon, acting as odorless dithiol equivalentsin thioacetalization, Michael additions and [5+1] annulation, as well as the synthetic applications based on the above reactions.

一般来说，基于α-羰基二硫缩烯酮化学的反应主要为：与金属有机试剂的选择性加成反应，与氮亲核体的共轭加成反应，α-碳原子的亲核性及相关反应，烷硫基作为硫醇的替代试剂的应用，α-羰基二硫缩烯酮在碳环、杂环化合物合成中的应用等。

Applications for isolated relays include controlling power supplies, turning on motors and annunciator lamps, and actuuating

隔离继电器的应用包括控制供电、马达和警报器的旋转，以及激励气动和水动阀门。

Owing to its lots of applications in engineering and interesting structure, anodic alumina has recently attracted great interests.

多孔铝的诸多工程应用及它的非常有趣的形态引起了国际上很多科研组的极大兴趣。

Finally, applications of the anomalous propagation of microwave in tropospheric ducts are discussed: in connection with concrete radar parameters, effects of ducts on radar range and detection performance are discussed, the results obtained are of great value for the overall design of radar systems; by use of the interference standards of ITU-R, the co-ordination area of satellite earth-station under tropospheric ducts environment is studied ; by explaining the relationship between evaporation duct and advection fog, a new way to forecast sea advection fog from evaporation duct is provided.

最后讨论了对流层大气波导环境下电波异常传播特性的应用：结合具体的雷达系统参数，模拟计算了大气波导对雷达作用距离及发现概率的影响，对雷达系统的总体设计具有重要的参考价值；对表面大气波导环境下的卫星地球站通信协调区域进行了确定，从理论上很好地给出了协调距离量级的概念，为卫星地球站与地面微波站之间的协调提供了依据和参考；分析了利用海面蒸发波导来快速预测平流海雾的新方法，完善了平流海雾的预报方法，对海上安全作业和生产具有重要的意义。

Ante video is a focus on digital video technology and communication technology applications, high-tech enterprises.

安特视讯是一家专注于数字视频技术和通信技术应用的高新技术企业。

They realized the device they were testing might have applications on Earth in detecting anthrax.

他们意识到他们测试的设备可能应用于地球上的炭疽热检测。

This paper summarizes the selection of key calculate parameters for example: anti - slide pile thrust, anti - slide pile position, pile spacing, pile anchor length, anchor cable pre - stressed value and so on are optimized after comparing the different calculation method, and stabilizing pile design frame process are described from scheme optimization till component design combine with the applications of slide slop protection engineering in Great Wall Coal Mine.

本文结合长城矿边坡加固工程，通过比较不同设计方法总结了关键计算参数，如：抗滑桩桩后推力，抗滑桩位置，桩间距，桩身锚固长度，锚索预应力值等的优化选取，编制了抗滑桩工程从方案优化至单个构件的完整计算步骤和设计框架流程，为同类预应力锚索抗滑桩工程设计提供了可靠的实用设计方法。

New methods are put forward based on the theoretical basis and the anticipative experimental results, and are beneficial to the theoretical research and engineering applications in image fusion technology.

本文所提出的一些新方法具有理论基础和预期的实验结果，这些工作对图像融合技术的理论研究和工程应用具有一定的作用。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。