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1.
ggested that the key point of treatment to Polymer-bearing wastewater in oilfield is the removal of polyacrylamide,the importance of each affecting factor in treating Polyacrylamide wastewater was determined by orthogonal experiments,and the mechanism of each affecting factor was analyzed thoroughly.Moreover,the optimal operating conditions was determined by selecti  相似文献   

2.
This study sheds light on the role of computerized Arabic language technologies in e-learning. Examples of these technologies are the grammar and spelling proofing tools, which can be used to indirectly teach Arabic to the users of such computer tools. Users of Arabic grammar proofing computer tools employ them to achieve correct Arabic sentences in Arabic processing programs. The proofing tools' role ends when they accomplish their regular tasks of proofing grammar and spelling of the Arabic text. This study, however, aims for the proofing tools to transcend their usual role into taking part in teaching Arabic grammar to their users. The study explores the function of the proofing tools, and introduces the most famous Arabic grammar and spelling proofing tools. The paper then elaborates the basic tasks of proofing applications, and further reflects how these applications can be used to teach Arabic to Arab users. The method used here is highlighting a set of the most common grammar and spelling mistakes corrected by such tools. Among the common mistakes are: confusing the glottal stop Hamza to the long vowel /a:/-Aleph as the initial letter of words, and the Arabic Ta ( )-a voiceless/t/to the fricative ( ) /h/as the ending letter of some Arabic words. Users also sometimes mistake the diphthong/aj/to the vowel/a/both written using the Arabic letter "Ya", and are confused by the "Irab" (the system of nominal and adjectival suffixes of Arabic) of the duals, sound masculine plurals, verbs in the present tense, conjugation of the five verbs, and verbs in the imperative form. The new mechanism proposed highlights additional tasks to the proofing tools, which may develop the Arabic e-learning techniques, including: underlining and analyzing the error, pointing out the grammatical rules on the issue in question, citing old Arabic texts and highlighting the word in question, documenting the grammar rule from Arabic references, linking the common mistakes together, whether of the same user, or all Arab users, and notifying the user that he/she has repeated this mistake.  相似文献   

3.
Based on the study of existing typical micro-milling tools and the actual demand for micro-milling tools,the P3 design principle and design flow for ultra-hard micro-milling tool were introduced to give basic guidance for theoptimization of micro-milling tools. Then, according to the P3 design flow, the manufacturing process of polycrystallinediamond (PCD) micro-milling tool was proposed, and the PCD micro-milling tool with diameter of 0.5 mm wasdeveloped. Finally, the micro-milling test on the slot was carried out to study the milling performance of PCD micromillingtool.  相似文献   

4.
教材分析:本课是“Oxford English Changjiang Edition”(4B)第四单元第一课时,主要内容是“Section A:Ken is at a shopping plaza.He has sixty yuan and he wants to buy a present.He is asking the shop assistant the prices of some items”。根据这一话题,我确定出本课的目标:重点是用英语认读人民币及货物价格,能通过提供的信息应答“How much is it? Do you want one?”,以持续相互间的交谈。我采用听、说、学和演的教学方法,遵循趣味性教学原则、情景教学原则和交际性原则,充分发挥现代教学媒体的优势,使课堂“情趣化、生活化、交际化”,引导学生在一种轻松、自然的氛围中快快乐乐地学习英语。  相似文献   

5.
Traffic assignment models are one of the basic tools for the analysis and design of transportation systems.However,the existing models have some defects.Considering the characteristics of Chinese urban mixed traffic and the randomness of transportation information,the author develops a combinatorial model involving stochastic choices of destination.mode and route,Its uniqueness and equivalance are also proved by the optimization theory.  相似文献   

6.
Given the increased adoption of the CMS (course management systems) as an instructional tool, it is important to address the potential use of this technology in Jordanian higher education institutions. This study investigates the potential to use CMS tools in instruction in the academic institutions in Jordan. This study does not seek to evaluate the current use of computer mediated tools or their features in instruction. Its purpose is to investigate what is currently taking place with CMS in higher education settings. Therefore, the study does not seek to determine the value that the use of the CMS tools may have contributed to instruction, however, it identifies the level of technology integration as well as the level of the technology use in higher education and problems associated with its use among the faculty. This study identifies prevalent faculty attitudes and perceptions toward the potential use of CMS tools in higher education institutions, in general, and in Jordan, in particular.  相似文献   

7.
知识与技能阅读下列对话,注意被动语态句式。( Lin Tao and Lily are visiting a science museum.)Lily: Hi, Lin Tao. Look at the huge thing. What’s that called in English?Lin Tao: Oh, it’s a rocket.Lily: What’s it made of?Lin Tao: It’s hard to say. It’s very complicated(复杂). I know that the outer covering is made of a special kind of steel and the steel can stand very high temperature. In the inner part, some are made of steel, some are even …  相似文献   

8.
1.课文原句:It was all that a person would need to survive—clothing,tools, weapons,pottery and spare materials to make new tools.(p.75)要点:spare的用法。透视:1)spare作动词意为"抽出/剩下(时间)",句型为"spare sb. time"。例如: Can you spare me ten minutes at the mo- ment?  相似文献   

9.
《文科爱好者》2004,(11):40-45
能认读并能运用本单元的生词和下面这些词组:be made of,be made in,be used for/as/by,on the other hand,in/arouad/all over the world…等。懂得被动语态(一般现在时态)的意义、构成及基本用法。了解英语是当今世界上最主要的国际通用语言,增强自己学好英语的自信心。  相似文献   

10.
李建高 《初中生》2002,(3):70-71
同学们先请看下面两个句子: 例句①:"I'm here!"said Jim."And so is Polly!" 例句②:-It may be in your room. -Ah,oit is.  相似文献   

11.
As it were是一个插入语,意思是“似乎”、“可以说是”,用来表示一个词或一句话表面上不太确切或并非如此,但实际上可以这么说。它的作用是表示那个词或那句话是个比喻说法,借以缓和或冲淡语气。此表达不受时态限制,通常位于句中,也可间或用于句末。在形式上,它是as if itwere so的缩简。英语中还有大致相当的其他短语,如if one might so put it,so to speak,in otherwords,in a manner of speaking,as one mightsay,metaphorically speaking等。例如:  相似文献   

12.
orecast the displacement of a dam, but it is difficult to describe the complicated correlation of displacements with their affecting factors. In the paper, a new method based on artificial neural network is used. Through an engineering illustratio  相似文献   

13.
Rapid changes in integrated circuits (IC) technology and constantly shrinking process geometries demand a new curriculum that meets the contemporary requirements for IC design. This is especially important for 90nm and below technologies and the use of state-of-the-art EDA design tools and advanced IC design techniques. The creation of new curriculum is laborious and requires a combination of effort from many specialists from different countries to obtain the best quality. This paper describes the experience in developing a new microelectronics curriculum, based on using Synopsys EDA tools, that is successfully deployed in leading technical universities around the world.  相似文献   

14.
15.
Hepatocellular carcinoma(HCC) remains one of the major public health problems throughout the world.Although originally associated with tumorigenic processes,liver angiogenesis has also been observed in the context of different liver in-flammatory,fibrotic,and ischemic conditions.Here we investigate the fractal dimension as a quantitator of non-Euclidean two-dimensional vascular geometry in a series of paired specimens of primary HCC and surrounding non-tumoral tissue,and discuss why this parameter might provide additional information regarding cancer behavior.The application of fractal geometry to the measurement of liver vascularity and the availability of a computer-aided quantitative method can eliminate errors in visual interpretation,and make it possible to obtain closer-to-reality numerals that are compulsory for any measurement process.  相似文献   

16.
d Visual Basic 3.0,design and realize the communication system of numerical control machine tools based on PDA.It has the capability of low cost,flexibility and it can use in differe  相似文献   

17.
《初中生》2002,(Z5)
同学们先请看下面两个句子:例句①:“I’m here!”said Jim.“And so is Polly!”例句②:-It may be in your room. -Ah,so it is.  相似文献   

18.
    
《海外英语》2010,(5):36-37
Small as it is, the pen has changed the course of history, shaped the destiny of nations, facilitated the commerce of peoples, imprisoned the elusive thoughts of man, recorded events, carried news, and done more work for mankind than all other tools or weapons.  相似文献   

19.
Corpus-based translation studies belong to a new translation study paradigm which rose at the beginning of 1990s. The rise of corpus brings the update of research tools and research methods, and lead t...  相似文献   

20.
As one of the most popular English learning tools, the 7th edition of Oxford Advanced Learner’s English-Chinese Dictionary aims to provide adequate information to satisfy learners’needs. In this articl...  相似文献   

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