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Meanwhile the defects are also studied by means of the methods of EPR, PSL, thermostimulated luminescence and absorption spectroscopy. These results indicate that the principal defects are F centers and O〓 in PSL. O〓 centers are formed by O〓 ions substituting for F ions with a trapped hole The trap depth of two kinds of F centers is obtained by using thermoluminescent spectra.
同时还利用电子顺磁共振谱,光激励发光,热释发光和吸收光谱的方法,研究了其材料中缺陷的性质,实验结果表明在光激励发光过程中主要的缺陷是F心和O〓心,其中,O〓心是O〓离子替代F〓离子并束缚一个空穴而形成的局域中心。
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In this paper,the forming mechanism and affecting favtor of bulk metallic glasses is systematically discussed from the aspects of thermodynamic, kinetic and microstructure . Thermodynamic factors which favor the amorphization of alloys analyzed, the glass forming range of ternary alloys system was proposed by using Miedema theory, Toop model and considering the influence of free energy of pure metals at different temperature. The approach was applied to predict the composition range of amorphous Mg-Cu-La alloys. Several methods(such as three empirical criterions ,binary alloys phase diagram , Miedema theory and Toop mode) were used to design a series of Mg65Cu25La10 、Mg68Cu17La15 and Mg57Cu23La20 alloys, These bulk amorphous alloys with maximum diameter thickness reaching to 1mm were prepared by means of graphite-molding casting though the raw materials are of a low purity by conventional casting processes at a low cooling rate.
本文从合金的热力学、动力学及结构形成条件方面系统的讨论了Mg 基大块非晶的形成机制及影响因素,并从非晶形成的热力学观点出发,综合应用Miedema理论和Toop 模型,并考虑纯金属在不同温度下的自由能,在此基础上提出了一种定量预测三元非晶合金形成范围的方法,用该方法计算Mg-Cu-La 三元合金系的非晶形成范围,应用多项技术(三经验原则、二元合金相图及Miedema 理论和Toop模型)设计了Mg65Cu25La10 、Mg68Cu17La15 和Mg57Cu23La20非晶合金。
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The microstructure of the magnesium alloy before and after ECAP were examined by means of OM and TEM. The hardness of the as-extruded and unextruded Mg-6Zn-1Gd-0.6Zr magnesium alloy was examined by vickers hardness tester. The rolling of the crystal plane in the process of ECAP was analyzed by X-ray diffraction.
采用光学显微镜和透射电子显微镜分析了试样ECAP变形前后的显微组织变化,采用显维硬度计对Mg-6Zn-1Gd-0.6Zr合金ECAP变形前后进行了硬度测试,采用X-射线分析法分析了ECAP变形过程中晶面的转动。
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Therefore, have produced a large number of idioms related to navigation and fishing; For example, spend money like water likens and spends money wasting, wasteful; Go by the board shows " to fail, fails "; Burn one's boats likens " cuts off all means of retreat and gives up the route of retreat by oneself "; All at sea shows the meaning of " at a loss "; Like a fish out of water likens " it is uneasy to be in the strange environment " etc..
由此,产生了大量的与航海和捕鱼有关的习语;例如, spend money like water比喻花钱浪费,大手大脚; go by the board表示&落空,失败&; burn one's boats比喻&破釜沉舟,自断退路&;all at sea表示&不知所措&的意思;like a fish out of water比喻&处在陌生的环境中不自在&等等。
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In this paper, temperature series for last 500-years in the east of northern Xinjiang is reconstruct ed by means of corelation analysis between tree-ring chronologies and temperature, and tested by his torical glacial data and so on, and the stages of little Ice Age are determined by using the series.
本文通过对年轮年表与温度的相关分析,建立了近500年来北疆东部冷暖变化序列,并利用历史记载、冰川进退等资料进行了验证,且运用冷暖序例进行了小冰期的年代测定并较详细地研究了气温与降水分布特征。
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Concrete is placed by chuting directly from the mix truck., where possible or from buckets handled by means of cranes or cableways, or it can be pumped into place by special concrete pumps.
具体物被藉由从混合卡车直接地滑槽放置。,哪里可能的或从桶子经由起重机或空中索道处理,或它能被特别具体的泵灌入地方。
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Before daybreak he would awake , leave the inn after rigorously paying his bill , and reaching the forest , he would , under presence of making studies in painting , test the hospitality of some peasants , procure himself the dress of a woodcutter and a hatchet , casting off the lion s skin to assume that of the woodman ; then , with his hands covered with dirt , his hair darkened by means of a leaden comb , his complexion embrowned with a preparation for which one of his old comrades had given him the recipe , he intended , by following the wooded districts , to reach the nearest frontier , walking by night and sleeping in the day in the forests and quarries , and only entering inhabited regions to buy a loaf from time to time
他已经有了一个非常安全的计划:他在天亮以前醒来,很快地付清了账单,离开旅馆,进入森林,然后,借口要画画,他花钱受到一个农民的友好接待,给自己弄到一套伐木者的衣服,一把斧头,脱掉身上的狮子皮,打扮成伐木者的装束然后,他用泥土涂满双手,用一把铅梳弄脏他的头发,用他的一个老同行传授他的方法把他的皮肤染成褐色,白天睡觉,晚上行路,只在必要的时候才到有人的地方去买一块面包吃,在森林里穿来穿去,一直到达最近的边境。
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Methods Ground dragon was respectively processed by traditional processing technology and cold-processing technology.The latter was done by the liquid nitrogen rapid freezing technology and lyophilizing technology.By means of qualitative and quantitative tests,SDS-PAGE and the software of ImageTool were applied to analyzing the difference of protein components in ground dragon from the two processing techniques.Fibrin plate method and thrombolysis test in vitro were carried out to determine the difference of the two processing techniques for the fibrinolytic activity.Micro-observation and MTT methods were used to assess the differences of antihepatic cancer activity between the traditional and the cold-processing groups.
方法地龙的炮制采用传统与低温两种工艺,低温炮制采用液氮快速冷冻与冷冻干燥技术;采用SDS-PAGE与ImageTool软件,对两种炮制工艺的地龙蛋白质组成的差异进行定性与定量分析;应用纤维蛋白平板法与体外溶栓试验,定性与定量分析两种炮制工艺的纤溶活性的差异;应用显微观察与MTT法,对两种炮制工艺体外抑制人肝癌细胞增殖活性进行定性与定量比较分析。
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METHODS: The expression of Elk-1 in fresh esophageal cancer tissues and their corresponding normal mucosae was detected immunohistochemically by means of tissue microarray. Its correlation with clinical characteristics was evaluated and analyzed by univariate analysis. All statistical analyses were performed by SPSS version 13.0. RESULTS: Expression level of transcription factor Elk-1 increased in 78.5%(84/107) ESCC tissues compared with their matched normal esophageal epithelium.
方法应用高通量的组织芯片以及免疫组化技术,分析了107例食管鳞癌患者的Elk-1的表达情况,在其蛋白质水平上,研究Elk-1在食管鳞癌组织和配对的正常粘膜组织的差异表达量,探讨该转录因子在食管鳞癌中的表达与临床病理各变量之间的关系。
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Indeed, the Peloponnesian War features everything one finds in modern international relations theory and practice:"international anarchy," the condition in which political entities exist in a state of nature with one another; attempts by these poleis to improve their security by means of alliances or war; weak allies who drag stronger allies into war, balance of power considerations; and "security dilemmas" brought about by a lack of trust among the actors.
确实,伯罗奔你撒战争反映了我们现代国际关系的理论和实践的所有内容:&国际无政府状态&,一种政治实体之间的自然存在状态;城邦试图以同盟或战争的形式增强安全;出于势力均衡的考虑,弱同盟把比它强大的同盟拖入战争;行为者之间信任的缺乏导致的&安全两难&。
- 推荐网络例句
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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。
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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。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。