转换

ABSTRACT Oversampling sigma-delta analog-to-digital converters are widely used in real life because of the high resolution with comparatively simply circuits.

过采样sigma-delta A/D转换器能以相对较简单电路获得较高的转换精度，因此在实际中得到广泛的应用。

Wang: I studied printmaking when I was at the Central Academy of Fine Art, especially copper etching, and I have always been making prints.

王：是。这里面有一个最主要的问题，是外地艺术家到北京后在心灵上的转换，这个转换使我后来发生了变化。

On the basis of our analysis we have concluded its grammatical meaning is "to preferto A, and to determine the choice by comparison".

通过分析，我们认为该格式的语法意义是&贬A扬B，通过比较，确立选择&，在此基础上找出了&与其A，不如B&能否转换为&宁可B，也不A&的原因，并指出了可以转换的类型。

It is concluded in Chapter Eight that: 1 linguistic proficiencies in three languages play a considerable part in code-switching of EFL teachers in trilingual context; the inter-sentential switching outweighs the intra-sentential switching both in frequencies and percentage; discourse-related switching also outweighs participant-related switching in frequencies and percentage; the EFL is maintained longest in EFL classroom and the language maintained second longest depends upon learners" higher proficiency in Chinese or Tibetan. 2 Ethnic identity and educational background is the major causal factor of EFL teachers" Chinese-English switching in trilingual classroom; duration of language contact and relative trilingual proficiencies are the two principal contributors to the English-Tibetan switching; while Tibetan-English switching is mainly driven by EFL teachers" ethnic identity and education background, as well as the duration of language contact; English-Chinese switching is also largely motivated by the duration of trilingual contact; and Chinese-Tibetan switching is determined by trilingual proficiency to a considerable extent. Meanwhile, psychologically, the switching is mainly motivated by a procedure of psychological projection, trilingual system conceptualization and the mentality of trilingual selection. 3 The educational reflections upon this study indicate: firstly, in trilingual context, the teachers" classroom discourse is characterized by the multilingual involvement, flexibility in strategy option as well as the extension and strengthening of the domination of teachers" discourse. Secondly, the discourse movement and code-switching are largely affected by two cultural ecological mechanisms: enculturation and cultural manipulation. Thirdly, the status quo of EFL trilingual teachers are characterized by unbalanced trilingual proficiencies, poor cultural awareness, and little knowledge of trilingual education and trilingual code-switching, therefore, suggestions are advanced in the end to provide them further education. Fourthly, in trilingual context, the EFL curriculum for ethnic minorities is characterized by plurality of aims, complexity of organization and variety of resources. Meanwhile, it is of great necessity to understand the linguistic values of EFL education for ethnic minority learners. To be specific, firstly, we should not only have a deep understanding of the distribution, construction, function as well as communicative effects of the three languages, but also have a comparative study of the three languages and thus provide the standardization and guidance for the trilingual education. In the end, it is advanced that trilingual EFL provision for ethnic minority should pursue to develop learners" multicultural value system in which first language culture and mother language culture take the central position and EFL culture plays a vital role.

3在三语环境下，教师课堂话语具有话语形态多元化、话语选择策略具有灵活性和教师话语权得到延伸和拓展等特征；文化涵化和文化操控是影响三语教师课堂语码转换的两种文化生态机制；参差不齐的三语水平、淡薄的多元文化意识和对三语教学和语码转换缺乏科学认识是我国目前三语师资的主要特点，因此应对三语教师进行职后继续教育；在三语环境下，民族外语课程具有课程目标多元化、课程组织复杂化和课程资源多样化等特点；应对民族外语教育的语言价值进行审视和解读，对三种语言在课堂话语中的分布趋势、结构特征、功能作用和交际效果等问题进行深入研究，加强对三种语言间的对比分析研究，同时对民族外语教育中的三语教学进行规范和指导；在强调民族文化和二语文化在三语文化格局中心地位和外语文化的重要作用的同时，民族地区的外语教育应以构建多元文化价值观为其文化追求。

As a result, dedicated transducers may be used which are particularly efficient in the narrower frequency range.

结果，可以使用专用转换器，该专用转换器在较窄的频率范围中特别有效。

In this study, we used poly L-latcide, poly DL-latcide-co-glycolide 75:25 (PLGA7525) and poly DL-latcide-co-glycolide 50:50 (PLGA5050) during citric acid inducing ammonium bicarbonate gas forming process to form porous polymer film, and rolled the porous polymer film to make nerve conduits with pores and multi-layered. Electron Spectroscopy for Chemical Analyzer and Attenuated Total Reflectance – Fourier-Transform Infrared Spectrometer were employed for determining elements' functionabilities and chemical compounds. Charge Coupled Device camera and Scanning Electron Microscope were employed for macroscopic and microscopic morphologies and structural observation. Differential Scanning Calorimetry was employed for measuring glass-transition temperature. Nano-indentation system was employed for measuring elastic modulus and hardness. Biodegradation and water absorption ratios were measured to analyze their chemical properties and SEM was employed for microscopic morphology of the tested nerve conduit.

本研究将以聚乳酸、聚乳酸-聚甘醇酸共聚合物（75：25）、聚乳酸-聚甘醇酸共聚合物（50：50）做为研究材料，以柠檬酸诱发碳酸氢铵发泡之气泡成型法制作具有相连通孔隙之高分子薄膜，再将高分子薄膜卷制成特殊多层的导管，制作具有多层孔隙之新型神经再生导管，以电子能谱化学分析及减弱式全反射-傅立叶转换红外线光谱分析进行成份分析及化学元素测定；以电荷耦合元件摄影机、扫瞄式电子显微镜进行多层孔隙型神经导管巨观及微观形态结构观察；以示差扫瞄热量量测分析玻璃转换温度、奈米三维量测弹性模数及硬度；以及进行降解性质测定，并以扫瞄式电子显微镜进行降解后之导管微观结构形态观察。

This paper analyzes and synthesizes the current topologies of single-stage PFC DC/DC converters with the direct power transfer technology,and describes mechanism and implementation of the DPT technology.

本文对现有的应用直接功率转换技术的单级 PFC AC/DC变换器进行了深入的分析和综合，阐明了它们的直接功率转换的机理和实现方法。

When you shift to a thread that is a close vibrational match to your present one, the change may be barely detectable; when you shift to a vibrationally different thread of possibility, it may suddenly seem you are living an entirely different life.

当你转换到一条接近你当前的时间线上时，改变机会不可能被察觉，当你转换到一个存在不同可能性的时间线上时，你可能立刻看起来向过着一种完全不同的生活。

TI's TMS320F2812 a malady is provided by the ADC conversion module to the AD for inaccurate, the document provides a corr...

TI的TMS320F2812有一个弊病就是所提供的ADC转换模块的AD转换不准确，本文档提供了其官方的矫正方案。

Using abstract programming language, such as Apia, the specification and derivation of the algorithmic program in six typical trees, graph problem is described. The standard proof and formal derivation is implemented by two above new strategies for developing loop invariants. The algorithm in Apia is transformed into corresponding program in Delphi and C++ by the automated algorithmic transformation system that Partition-and-Recur method provided and correct result is received. These improve reliability and developing efficiency of the kind of complex algorithm.

利用抽象程序设计语言Apla精确描述了6个典型树、图等问题的程序规约和求解算法程序，用上述提出的两种新策略开发了循环不变式，实现了严格的形式化推导或证明，并用PAR方法提供的算法程序自动转换系统将得到的Apla算法程序转换成对应的Delphi和C~程序，均得到了正确的运行结果，大幅度地提高了这类复杂算法程序的可靠性和开发效率。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。