在进行中的

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。

This article introduced CCD photometry with IRAF which is used specially for astronomic image and data processing based on our long-term research and use.

文章对天文图像和数据处理软件IRAF在CCD 测光中的使用做了介绍，在我们长期研究和使用该软件的基础上，对IRAF的CCD 测光给出了我们研究与应用的结果，提出了最佳的参数设置，同时我们对IRAF在RedhatLinux中的安装过程进行了探研与总结。

On the other hand, in order to contact to practical application and combine the actual experimental condition, we can make some elementary research on the application of boron nitride which has been synthesized.

将合成的纳米氮化硼材料进行表面改性，改善纳米粉体表面的润湿性，增强了其在介质中的界面相容性，使氮化硼纳米粒子容易在有机化合物中分散，提高了氮化硼纳米粉体的应用性能。

When calculating the pressure loss of laminar flow for Casson fluid in drilling tools, there is a need for a nonlinear equation. It used to be calculate by approximate formula.

在计算卡森流体在钻具中的层流压降时，需要求解一个非线性方程，以往通常使用近似公式进行计算。

This design introduced the bulldozer with the edge board in the machining center the drill hole jig design and the simulation elaborated the bulldozer with the edge board in the machining center the drill hole jig design is mainly designs jig's positioning device the clamp and the jig body's structure according to the edge board structure shape selects jig various components according to the edge board's material the material carries on the intensity examination has realized jig's in processing localization and the clamp function.

本设计介绍了推土机用刃板在加工中心上钻孔的夹具设计与仿真，阐述了推土机用刃板在加工中心上钻孔的夹具设计，主要是根据刃板的结构形状来设计夹具的定位装置、夹紧装置和夹具体的结构，根据刃板的材料来选用夹具各零件的材料，进行强度校核，实现了夹具在加工中的定位和夹紧作用。

In Ethiopia, for instance, WaterAid is supporting several spring-fed gravity driven projects in the South of this very dry nation, while in the North, several hand-dug wells are underway.

举例说，在埃塞俄比亚，&水援助组织&支持几个引水灌溉项目在这个极度干旱国家的南方；同时在北方，几个手挖井也在进行中。

Objective To explore the differential diagnostic value of glueose-6-phosphatc isomerase（GP1） in rheumatoid arthritis and Other autoimmune diseases and to study the mechanism of GP1 in RA.

目的 探讨葡萄糖-6-磷酸异构酶在类风湿关节炎诊断及与其他自身免疫性疾病鉴别诊断中的价值，并对GPI在RA中的致病机理进行初步分析。

A detailed calculation results verified the moment and deflection of lapped connection beam is similar as that of continuous beam. So the continuous beam analytic model is suitable for analyzing roof purlins. However, how to guarantee the stability of the bearing compressed zone without the tension bar in bottom flange greatly affect the use of continuous purlins in project, theoretical analysis is carried out.

对搭接模型和均匀连续梁模型的计算结果进行对比，证明采用均匀连续梁的分析模型可较为准确地描述连续搭接檩条的内力状况；而对于仅在檩条上翼缘附近设置拉条，竖向力作用下如何保证支座区受压下翼缘的稳定性在很大程度上影响着连续檩条在工程中的推广应用，因此对其进行了理论分析。

In this article, we will put the generic in the system of noun phrase, and analyze the manifestation of Japanese generic, then compare it with Chinese.

本文将类指成分纳入名词性成分的一个子系统，对类指成分在日语中的表现形式进行了分析，并和汉语进行了比较。

This thesis does research on four groups of pronouns. It firstly trace back to the origin of the pronouns according to the research achievements available and then give detailed descriptions to their concrete using situations in Tang Poetry and to simply analyze their using conditions in Chinese as well as to make the comparative analysis on each group of pronouns so as to draw some reliable conclusions.

论文选取了唐诗中的四组代词进行研究，参照现有的研究成果，先对每个代词溯源，然后对其在唐诗中的具体使用情况做出详细的描述，并简单分析其在现代汉语的使用情况，并在此基础上，对唐诗中的每一组代词做了比较分析，由此得出了一些比较可靠的结论。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。