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When the Al-Mg-Zr-Sc welding wire was used as filling material, the grains of welding seam were refined obviously, and the weld joint was greatly strengthened by forming of fine equiaxial grains layer in fusion zone.

结果表明：采用两种焊丝焊接的Al-Mg-Sc合金薄板的焊接接头强度系数均大于0.9。

When the Al-Mg-Zr-Sc welding wire was used as filling material,the grains of welding seam were refined obviously,and the weld joint was greatly strengthened by forming of fine equiaxial grains layer in fusion zone .

但采用Al-Mg-Zr-Sc合金焊丝为填充材料时，焊缝晶粒组织明显细化，熔合区形成的细小等轴晶层提高了基材与焊缝填充材料的结合力，焊接接头的屈服强度比采用Al-Mg-Zr合金焊丝为填充材料时提高了100 MPa，显著提高了Al-Mg-Sc合金焊接构件的许用强度，因此焊接Al-Mg-Sc板材更宜采用Al-Mg-Sc-Zr焊丝。

Settlementof excessive entry may as follows: firstly, trade administrative should be strengthened;secondly, aids on exit should be offered and coercing exit should be applied; thirdly,encouragement of merging; fourthly, eradiate micro basis that segregate local market byreformation.

总体上看，中国流通组织形式的变化表现为两个方面：一方面是新的组织形式大量出现，如超级市场、仓储商店的崛起，方便店、连锁店的涌现，各种类型的流通企业集团的兴起从根本上动摇了原有的流通组织体系；另一方面是原有的流通组织为适应竞争的需要纷纷进行了组织创新和经营制度创新，如传统的小型百货商店和专营副食品店转化为综合商店和专业化商店，一些仓储企业发挥自身优势改建成仓储式销售或工业品批发贸易市场等。

First, rape breed innovation must be strengthened , which can reduce die content of glucosinolate and erucic acid of rape breed and thus improve the per unit area yield and oil content of rape.

人世后我国油菜产业参与国际竞争的主要形式是通过发展我国油菜生产以减少对国外油菜及制品的进口。

The features of AAA adsorbed on the ethylatedβ-CD polymer were similar with those of the parentalβ-CD polymer, but theadsorption ratios of AAA on the ethylatedβ-CD polymer were higher than those of the parentalβ-CD polymer. It may be due to the strengthened hydrophobic interactions between AAA and the ethylatedβ-CD polymer, which was caused by the ethylation of the parentalβ-CD polymer.

研究表明其对芳香氨基酸的吸附规律与母体β-环糊精聚合物类似；与母体β-环糊精聚合物相比，芳香氨基酸在该聚合物上的吸附率有所增加，这可能是因为乙基化增强了β-环糊精空腔外沿的疏水性，从而增强了乙基化β-环糊精聚合物与芳香氨基酸之间的疏水相互作用。

Firstly, some difficult problems required to be solved,such as the land surface parameters′ calculation and observation over inhomogeneous land surface and development similarity theory which can be applicable to the inhomogeneous land surface. Secondly, studies of the bulk transfer coefficients over humid regions of China must be strengthened. Thirdly, whether or not understanding the landatmosphere interaction process over inhomogeneous and complicated land surface in its entirety, the land surface parameters′ expandedness form local to regional scope is a critical and difficult problem.

在此基础上，探讨了该领域研究中存在的几点科学问题：①需要解决非均匀下垫面地表参数的计算和观测以及发展适用于非均匀下垫面的相似性理论等难题；②对我国湿润地区地表总体输送系数的研究需要加强；③能否对非均匀复杂下垫面陆气相互作用过程进行全面的认识，地表参数由&点&到&面&的推广是关键也是难题。

Pragmatic presupposition determines the choice of information focus and its position in a sentence,organizes the discourse into a coherent whole,concise,clear and smooth,and achieves the expected stylistic effects.in college english teaching,if teachers teach the knowledge about pragmatic presupposition in listening teaching,introduce the frequently-seen patterns of presupposition, increase the presuppositional sensitivity of students to certain words and structures,guide students to use the theory on presuppositional information to make forecasts on base of written listening material,listen purposefully,and get rid of the distraction of the minor and redundant information,the ability of students to obtain major information and linguistic inference will be strengthened and their listening competence will improve remarkably.george yule divided presuppositional triggers into factive presupposition,non-factive presupposition,counter-factive presupposition,existential presupposition,lexical presupposition and structural presupposition.presuppositional triggers are helpful for us to understand the true intention of the speaker or writer.in college english reading teaching,if teachers introduce the discourse organizing function of pragmatic presupposition and the relevant presupposition triggers,and teach students to use these triggers to communicate with the writer,the comprehension competence of students will be greatly enhanced.the essential function of presupposition is to build a framework for the further development of discourse.in college english writing teaching,teachers can use the theory on pragmatic presupposition to construct a handy training program for textual organization,increase the textual coherence, economy and structural perfection of the english writings by students.in college english translation teaching,teachers should focus on developing the pragmatic presuppositional thinking of students,enable them to grasp the presupposed information in source text / speech exactly,understand the original thoroughly,correctly reorganize and reproduce the pragmatic presuppositions in the target language,carry out the functional equivalence in translation and successfully realize the smooth and accurate communication.with the instruction of pragmatic presupposition in college english teaching,the complete understanding and integral acquisition of english and chinese of students will come true.in conclusion,to implement the curriculum requirements for college english teaching promulgated by the ministry of education of china,we should emphasize the instruction of the theory on pragmatic presupposition in college english teaching,carry it through from beginning to end.it's one of the important means to realize the college english teaching reform, improve the effects of college english teaching,strengthenr the practical and integrative language abilities of students,in order to cultivate the compound talents to adapt to the global integration and meet the requirements of the reform and opening in china.

在大学英语教学中，教师将语用预设知识贯穿于听力教学过程中，讲授一些常出现的预设类型，提高学生对一些特定的词语和结构的预设敏感度，引导学生运用预设信息理论对听力文字材料进行预测，有的放矢，排除次要、冗余信息的干扰，增强获取主要信息的能力和语言推理能力，从而提。。。更多高学生的听力理解水平。george yule将预设触发语分为事实预设、非事实预设、反事实预设、存在预设、词汇预设和结构预设，触发语有助于我们在阅读当中理解作者的真正用意。在大学英语阅读教学中，介绍语用预设的语篇组织功能和有关的预设触发语，并利用触发语来与作者进行交流，会极大地提高阅读理解能力。预设的基本功能就是为语篇的进一步发展建立一个框架。利用语用预设理论可以为大学英语写作教学构建一个易于操作的篇章组织训练方法，提高学生英语写作的语篇连贯性，经济性和结构优化。在大学英语翻译教学中，注重培养学生的语用预设思维，准确把握源语的前提信息，透彻理解原文，使语用预设在目的语中正确重组和再现，实现翻译的功能对等，交际的流畅性和准确性，并增强学生对英汉双语的全面性认识和整体性习得。综上所述，为更好地贯彻和实施教育部颁布的《大学英语课程教学要求》，在大学英语教学中重视语用预设理论的传授，使语用预设贯穿于大学英语教学的始终，是实现大学英语教学改革的重要手段，改善大学英语教学效果，增强学生的实用综合语言能力，培养符合全球一体化趋势，适应改革开放要求的复合型人才。

Has had the capacity of refining. The functing of simultaneous deoxidation and desulphurization will be fally realized when the process was modified and operation was strengthened.

优化试验得出：酒钢LF炉已具备发挥其精炼功能的条件，切实改进工艺制度，加强操作，酒钢LF炉同时脱氧、脱硫功能可以充分实现。

In fact, the PKMzeta molecules appeared to herd themselves, like Army Rangers occupying a small peninsula, into precisely the fingerlike connections among brain cells that were strengthened.

事实上，PKMzeta分子似乎自我聚集、准确进入脑细胞之间被加强了的指状连接，恰如陆军骑兵占领一个小半岛。

In this paper, the flexural behavior of reinforced concrete T beams strengthened with CFRP laminates was discussed.

本文主要研究了碳纤维布对钢筋混凝土T梁的抗弯加固。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！