从无变化的

SEM analysis finds that the fractures are intercrystalline plus quasi-cleavage fractures under quasi-motionless state;with the increase of stress intensity factor,fractureschange from transcrystalline quasieleavage fractutes to microvoid-coalescence dimple plus cleavage frac-tures,The increase of fracture toughHess of 8090Al-Li alloy under high stress intensity factor is associ-ated with the deformation mechanism and the change of precipitation Free Zone of grain boundary.

扫描电镜分析发现，准静态下的断裂为沿晶和准解理混合断口；随着应力强度因于的增加，断裂从准解理断裂过渡到准解理和显微空穴聚集的韧窝断裂舶混合断口。高应力强度因于率下断裂韧度的提高与其变形机制和晶界无沉淀区的变化有关。

It is undeniable fact that translationhas caused changes in Chinese,but such changes are subject to limitations due to thefact that there exist two forces competing and interacting with each other:on the onehand,Europeanized grammar,as an external force,triggered changes in variousaspects of Chinese ranging from vocabulary,grammar,to discourse;on the other hand,the intrinsic rules of Chinese constantly govern the changes resulted fromEuropeanization,absorbing which can be fitted in and rejecting which can\'t.

翻译对汉语造成了影响固然是事实，但这种影响并非无所不及，在翻译欧化汉语的过程中，始终存在着两种相互掣肘的力量：一方面，欧化作为一种外力，影响着汉语从词汇、到语法、再到篇章的方方面面；而与此同时，汉语自身的规律也在不停地规约着欧化带来的种种语言变化，吸纳可以吸纳的，排斥不能融入的，这两种力量的角逐最终决定了汉语欧化既是可能的，同样也是有限度的。

The major findings are:⑴During the intelligence test for the three groups of students, for half of the students or most of the students their scores on the all-including scale, the language scale and the performance scale all increased to various degrees;⑵From the analysis of the relationship between intelligence and reaction time, it is found that the result of this study confirms the existing views that there is a negative correlation between intelligence and reaction time, and the negative correlation is more evident when it is choice reaction time;⑶Different motor skills have different influences upon children with lower intelligence. Though the difference is not large, the average increasing percentages in the sample T tests for the three groups before and after the experiment show that the effect of open motor skill is the best, that of the synthetic motor skill or the open-closed is the better, and that there isn't a marked change in the closed motor skill trainees;⑷While analyzing the result of the experiment, it is found that the scores on the performance scale are higher than the scores on the language scale, especially in the open motor skill group, which tells us that the intelligence improving effect of physical training is realized to a greater extent through increasing their performance abililty.

研究结果显示：⑴相对于实验前测试结果，三个实验组学生的智力水平在实验后测试中不论是在全量表得分还是在语言量表、操作量表得分方面均得到了不同程度的提高；⑵从智力与反应时的相关分析可看出，本研究结果进一步验证了前人观点，即智力与反应时有显著的负相关，特别是与选择反应时有很强的负相关性；⑶不同运动技能对智力落后学生智力影响不同，虽然实验后各组间没有显著性差异，但经各组实验前后配对样本T检验及实验前后各项分数均值提高百分率可看出，开放式运动技能组实验效果最好，综合运动技能组次之，闭锁式运动技能组实验前后在智力测验量表得分上无显著性变化；⑷各组实验前后的操作量表分比言语量表分提高幅度更大，开放式运动技能组表现得尤其显著，这表明了体育活动对改善智力落后学生的智力水平，很大程度上是通过提高他们的操作能力来实现的。

Early researches have been limited to animal experiment of detecting metabolism of brain. With the development of magnetic resonance spectrum, studying in vivo has come ture on the biochemistry metabolism's level, which makes a new breakthrough for us to continue research of IGE afterward.

以往的研究仅限于动物实验的方法检测其脑内的代谢变化，现在随着磁共振波谱(Magnetic Resonance Spectroscopy， MRS)的应用，无创地从生化代谢水平上研究活体已成为现实，为这一类疾病的研究打开了新的局面。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。