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Ti composite oxide could promote the formation of acicular ferrite and microstructure of coarse-grain HAZ of Ti treated steel consists of ferrit in grain boundaries, ferrite side plate and large amount of intragranular acicular ferrite.

复合Ti的氧化物具有促进晶内针状铁素体形核的能力,焊接粗晶区主要由晶界铁素体、少量的侧板条铁素体和大量的晶内针状铁素体组成。

SEM results show that the morphology of the anhydrous magnesium carbonate is a well-crystallized multiple layer parallelepiped .

SEM 结果显示无水碳酸镁呈结晶良好的多层平行六面体形态,该平行六面体的底面近似于菱形,边长约为20μm,六面体的侧棱长约20~25μm。

Chapter Ⅱ Xenopus Tbx6 Mediates Presomatic Mesoderm Cell Adhesion during Somitogenesis As a member of T-box gene family, Tbx6 is involved in somite cell fate decision and endows adhesion properties to mesoderm cells.

第二章 xTbx6在体节发生过程中介导了预定体节中胚层的粘连 xTbx6是T-box转录调控因子家族的成员,xTbx6参与体节细胞命运决定和赋予旁侧中胚层细胞特定的粘连特性。

The invention also relates to a nozzle body (31) comprising a nozzle outlet which is disposed on the combustion chamber side end thereof, a nozzle needle (33) which is arranged in an axially displaceable manner and/or which can is actuated in a longitudinal recess (32) of the nozzle body (31); a throttle disk (25) which is arranged between the nozzle body (31) and the control valve (20) and which is closed on the rear end (oriented away from the nozzle outlet) of the longitudinal recess (32). Said throttle disk forms an opening stop for the nozzle needle (33) which co-operates with the rear front surface (orientated away from the nozzle outlet) of the nozzle needle (33) and defines the opening stroke of the nozzle needle (33), and a control chamber (45) formed between the rear nozzle needle front surface and the throttle disk (25), said control chamber being hydraulically connected to a pressure connection (29) which is used to supply fuel.

还设置了:一个喷嘴体(31),在该喷嘴体的燃烧室侧的端部上构成一个喷嘴出口;一个喷嘴针(33),该喷嘴针在轴向上可运动或可操作地安置在该喷嘴体(31)的一个纵向开口(32)中;一个封闭该纵向开口(32)的后面的端部的、安置在喷嘴体(31)与控制阀(20)之间的节流盘(25),该节流盘构成用于该喷嘴针(33)的一个打开止挡,在此与该喷嘴针(33)的后面的端面协同作用并由此限定该喷嘴针(33)的打开行程的边界;和一个在该后面的喷嘴针端面与该节流盘(25)之间构成的控制室(45),该控制室与一个用于燃料输入的压力接口(29)处于液压连接中。

During the process of the fore mentioned analyses, some tentative works as follows were done.(1)On the basis of the fundamental of spatial analytic geometry, the basic method for displaceable block searching was put forward and the relevant program was written. With this program one can easily search out all the displaceable blocks and omitting of blocks, which is very common in searching blocks manually, can be avoided.(2)The coefficient of stability of blocks with failure mode II-2(that is, sliding on a single sliding surface, but confined by near intersecting line )was deduced.(3)The multi-cavern effect of Laxiwa underground caverns was studied on the assumption that all of the caverns were full face tunneled at the same time.(4)The stability classification scheme of rock mass surrounding large scale underground caverns was established. In addition to inherit the merits of the method of engineering geological

在完成上述工作的过程中,本论文主要在以下几个方面进行了一些探索:①基于空间解析几何原理,提出了块体搜索的基本思路并编制出相应的程序,基本实现了块体搜索的自动化,既大大缩短了块体搜索时间,又能防止因人工搜索引起的遗漏;②推导出Ⅱ-2型(单滑面滑动,但受侧限面约束)块体的稳定性系数计算公式;③以数值模拟方法论证了拉西瓦地下厂房洞室群全断面一次开挖时群洞效应的具体特点;④以岩体质量、开挖效应、群洞效应和次生灾害效应为评价指标,建立了&大型地下洞室群围岩稳定性分类&方案;该方案既继承了水电行业规范&围岩工程地质分类&法的优点,又综合考虑了大型地下洞室群的工程特点。

In this paper, cholinergic neurons was mapped in the two kinds of birds (Emberiza rutila and Fringilla montifringilla) by using immunohistochemical method.The soma size and cell density of cholinergic neurons in the three song control nuclei, the higher vocal center, the robust nucleus of the archistriatum and area X, were measured and compared. Here we discussed the distribution of cholinergic neurons and their effect on the process of song producing and song learning.

本文以中国北方地区常见的两种鸣禽栗鹀和燕雀为材料,应用免疫组化方法,对两种鸣禽发声控制核团,即上纹状体腹侧尾核或高级发声中枢、古纹状体粗核、X区内胆碱能神经元的胞体大小和胞体密度进行了观察测量,旨在探讨胆碱能神经元在发声控制核团内的分布情况及其在鸣啭产生和学习过程中的作用。

Of the 19 cases,19 fetus were found,MRI confirmed 14 cases considered or suspected as fetal corpus callosum agenesis by US(8 cases are completed agenesis of corpus collosom-CACC,6 cases are partial agenesis of corpus collosom-PACC, and 5 cases had took on autopsy),however 3 cases are mild enlargement of lateral cerebral ventricle and 2 cases are leukodystrophy.In these cases,MRI confirmed a Dandy-Walker syndrome and a lipoma of corpus callosum suspected by US,detect a Dandy-Walker syndrome and a microcephalus made missed diagnoses by US.The fetal corpus callosum and additional cerebral anomalies were shown more clearly on MR T_2-weighted images.

胎儿胼胝体长度与额枕径的比值在24~36孕龄阶段相对较恒定。2、19例孕妇共检出胎儿19个,MRI证实超声疑诊的胎儿胼胝体发育不全14例(完全型胼胝体发育不全8例,部分型胼胝体发育不全6例,有胎儿尸检结果对照者5例),3例为单纯侧脑室轻度扩张,2例考虑脑白质发育不良,合并Dandy—Walker综合征1例,胼胝体脂肪瘤1例,检出超声漏诊合并Dandy-Walker综合征1例及脑小畸形1例。

In this study the composites were applied to repair the rabbits'mandibular defects and implanted at the surface as onlay grafts that was fixed with dental implants. The ability of the composites repairing maxillofacial defects was evaluated with general observation, radiological and histological examination and compared with autogenous bone and coral.

本研究通过观察rhBMP-2、胶原、珊瑚复合骨修复兔下颌骨缺损,加高狗下颌骨骨面及与牙种植体结合,并与新鲜自体骨和珊瑚的修复作用比较,(1)应用复合骨修复兔下颌骨缺损,1、2、3个月取材,(2)将复合骨植于狗下颌骨体部颊侧骨膜下,采用钛种植体固定,1.5、3个月取材,通过体视及测量,X线片,组织学等观测指标,分析rhBMP-2、胶原、珊瑚复合骨修复骨缺损特点和体内降解特点。

Anterior-posterior and lateral radiographs of the hip were taken to observe radiotransparent region and sclerosis, prosthesis dislocation, attachment of prosthesis and the femur and prosthesis stability.

常规摄髋关节正侧位X射线片,了解假体与骨界面是否有透光区和硬化带,观察假体是否有移位发生以及假体与股骨的接触情况、假体固定的稳定性。

In this paper, two assemblies of special test equipments have been designed and fabricated by authors in our laboratory: namely Catalyst Molding Process Analyzer and Catalyst Mechanical Process Tester. These new skills are developed for the dynamic studies on whole mold forming process and crushing process of Fe-Cr WGHS catalyst pellet. Based on the orthogonal experimental design, the effects of some factors during the forming process of solid catalyst, such as predensification proportion, calcination time, calcination temperature and content of graphite on the mechanical strength of catalyst pellets are systematically examined, and the molding conditions have been optimized. Based on the experimental data, the relationship between catalyst density and forming pressure are educed, and the physical significances of some related parameters are described. The parameter of macro scopic elastic moduls has been suggested to character the mechanical properties of molding catalyst. The effects of molding pressure on mechanical properties of catalyst pellets are discussed, and results show that there exists a optimal molding pressure for the ideal mechanical properties: when over-high or over-low pressure is applied, the specific surface area and side crushing strength of catalyst pellets will decreased. The "rebound effect" will be undermined by the unsuitable pressure maintain process, resulting in the apparent decrease of mechanical strength of catalyst pellets.

本研究通过自行设计制造的催化剂模压成型过程分析仪(Catalyst Molding Process Analyzer, CMPA)和催化剂力学性质测试仪(Catalyst Mechanical Properties Tester, CMPT),以Fe-Cr系高温变换催化剂片剂为研究对象,对成型过程和受压破碎过程提供了全过程动态研究的新手段;本研究利用正交实验设计方法考察了固体催化剂成型过程中诸因素(包含预密致比例、煅烧时间、煅烧温度和石墨含量等)对催化剂成型体强度的影响,并对成型条件进行了优化;根据实验结果,关联确定了固体催化剂成型过程中的密度-压力关系式,并对方程中诸因子的物理意义进行了描述;提出了一种利用宏观弹性模量来表征成型催化剂的力学性质的方法;研究讨论了成型压力对催化剂成型体强度性质的影响,结果表明:对于催化剂成型体的强度和比表面性质,成型压力存在着一个最佳值,过高的成型压力会导致比表面积和侧压强度的降低;不适当的成型压力的维持时间会破坏&压力回弹&作用,造成催化剂成型体的机械强度明显降低。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。