The influence of pipe forming process, welding procedure and electric system variation on the occurence of porosity in weld Was studied. Then a good condition to get ride of porosity in production line for spiral FiFe welding is created.

1、

This paper studies the tensile properties of stripe and round bar specimens for high grade ( API X65~ X70) spiral submerged-arc welding ( SSAW) steel pipes.

通过试验研究了X65、X70级螺旋埋弧焊钢管不同拉伸试样&板状试样和圆棒试样的拉伸性能。

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The thesis analyses the advantage of the ERW tubing and casing comparing with spiral welding tube and seamless casing and tubing, introduces its main manufacturing process and facility, bring forward the feasibility and necessary of importing the oversea manufacturing technology to produce the ERW tubing and casing.

对比、分析了直缝焊管与螺旋焊管和无缝管作油井管的优势，简要介绍了ERW油井管的生产流程和主要设备，提出了积极引进国外生产技术，生产ERW油井管的可行性和必要性。

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3、

Since the stress concentration analysis of weld angular distortion in spiral welding pipeline concerns complicated three-dimensional mechanics issues, there are no formulae and methods available for it in published literatures.

螺旋焊管焊缝噘嘴问题是复杂的三维问题，国际上目前尚无现成的应力计算公式可以利用。

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4、

The Experiment Study of the Tube-Cutting Machine for Cutting the Spiral Welding Tubes of Big-Middle Diameters

大中直径螺旋焊管切管机的试验研究

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5、

Stress analysis method of weld angular distortion for spiral welding pipeline

螺旋焊管焊缝噘嘴应力分析方法

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A Contrastive Analysis of Cohesive Devices in Translated Chinese and English Prose

英汉互译语篇衔接手段对比分析

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Logic in Translation of English to Chinese and Chinese to English

英汉互译中的逻辑问题

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In translation, amplification is a common method.

在英汉互译中，增译法是一种常用的翻译方法。

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Thus it has opened up a new perspective to translation studies.

因此，翻译功能理论也为英汉互译研究开辟了一个新视角。

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10、

Korean Proper Names: Their Transliteration in English-Chinese and Chinese-English Translation

英汉互译中的韩国语专有名词音译问题

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11、

A Discussion on the Transformation of Sentence Structures in English-Chinese Translation

浅谈英汉互译中句型结构的转换

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12、

There are plentiful idioms in both English and Chinese.

英语和汉语这两种语言中都有着丰富的成语，因此，在英汉互译时，对其文化内涵进行分析和研究是十分必要的。

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13、

Culture Cultural Loss and Its Compensation in Chinese-English and English-Chinese Translation

英汉互译中的文化缺损及补偿

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14、

Analysis of the Reasons of Semantic Differences in Mutual Translations

英汉互译中语义差异的致因分析

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15、

The analysis conduces to smooth expression in English-Chinese translation.

对比分析有助于实现英汉互译之目的。

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16、

English Negation and Affirmative-negative Transition in Translation

英语否定结构的译法及英汉互译中肯定与否定的转换

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17、

Techniques in the translation of culturally loaded-words

英汉互译中文化负载词的处理对策

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Studies on the Reasons for Difference between Chinese and Western Politeness Pragmatics

中西礼貌语用差异成因探析英汉互译中语义差异的致因分析

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19、

A Study on Translation Strategies between English and Chinese from a Cultural Perspective

文化视角下的英汉互译策略研究

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20、

Non-equivalence of the English and Chinese passive voice in translation

英汉互译中被动语态的不对等现象

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