双切的

When serious fault occurs on the power receiving section of southern Beijing-Tianjin power grid, including Dafang double circuit lines, Fangbao line and Baoba line, generator tripping and load shedding should be done to ensure the stability of the power grid.

当京津南部受电断面(大房双+房保线+保霸线)发生严重故障时，采取切机、切负荷措施，防止大面积停电，保证京津南部电网的安全稳定运行。

The aerodynamic characteristics of the cuted tip rhombus wing and double-delta wing of middling sweepback angle and aspect ratio about sixty type are investigated by a numerical method based on Eular equations.

采用Euler数值计算方法，对60多种中等后掠角及展弦比的切尖菱形机翼、双三角机翼纵向气动力特性进行了计算、分析和比较，从中筛选出16种切尖菱形机翼、14种双三角机翼进行了全机高速风洞实验研究，给出了机翼的展弦比、前缘后掠角、根梢比及几何扭转变化对全机升力、阻力及俯仰力矩的影响曲线和数据分析，在此基础上提出了用于定量估算两类机翼纵向气动力特性的关系式及修正因子。

Methods:The whole mature protein coding sequence of three truncated dystrophin gene was amplified by RT-PCR method applied to human muscle cDNA. The fragment was inserted into prokaryotic expression vector pET28a plasmid.

以人肌肉组织cDNA为模板，采用RT-PCR扩增三个截短的肌营养不良蛋白cDNA，分别克隆入原核表达载体pET28a中，经限制性内切酶双酶切及DNA序列分析鉴定目的基因。

Printing equipment consists of 1 set of the world most advanced Roland 2000 quadrichromatic printing machine made in German,2 sets of civil first-class JS2102 double-faced offset machine in folio made in Beijing People's Machine Company,1 set of J2105 bichromatic offset machine in folio,1 set of J4103 monochromatic offset machine in quarto.

印刷设备有德国生产的世界最先进的ROLAND 200（曼罗兰200型）四色印刷机和国内一流的北京人民机器厂生产的JS2102对开双面胶印机二台、J2108对开单色胶印机一台、J2105对开双色胶印机一台、J4103四开单色胶印机一台，为高质量完成装订任务，他们彩用了瑞士生产的马铁尼胶订机和美国双头骑马订书机、精装锁线机、模切机等一批先进的装订设备，形成了激光照排、照像、制版、装祯、模切、包装一条龙的印刷生产体系。

The clinical characters of oligodontia concluded from this study are following:(1) There is significant difference that more teeth absent and more existent teeth anomalies in patients of oligodontia/S group than in patients of oligodontia/I group, and the peg-shaped upper lateral incisor is the most frequently affected teeth with shape anomaly.(2) Both of the two groups have no significant differences in number of teeth missing between maxilla and mandible as well as that between left and right side.(3) The distribution of teeth missing is bilateral symmetry in both groups, but the frequency of teeth lost are different: excluding the third molar, in oligodontia/I group, the lower second premolar is the most frequently congenitally missing tooth followed by the upper lateral incisor, while in oligodontia/S group, the most frequently missing teeth are mandibular canine and maxillary lateral incisor. Nevertheless, the first molars are the most stable teeth in both groups.(4) In oligodonita/I group, the mean mesiodistal dimensions of all type of existent teeth are significantly smaller than normal value. It is implied that oligodontia is not an isolated phenomenon, but is related to a complex of other dental changes.

对于口腔多个恒牙先天缺失的临床特点有以下初步结论：(1)综合征型先天缺牙患者较单纯型先天缺牙患者恒牙缺失数目更多，平均分别为23.9个和14.9个，且现存牙齿有更多的形态异常，分别为7／10例（70％）和6／22例（27.3％），其中最常见的是上颌侧切牙畸形；(2)两种类型的多个恒牙先天缺失患者的缺牙数目在上下颌及左右侧之间均无差别；(3)两种类型的多个恒牙先天缺失患者在缺失牙位上均呈对称分布，但在具体牙位上有所差异：不计第三磨牙，单纯型先天缺牙最常缺失的牙位是下颌第二双尖牙、其次为上颌侧切牙；而综合征型先天缺牙最常缺失的牙位是下颌尖牙和上颌侧切牙；无论何种情况，第一磨牙均为牙列中最稳定的牙齿；(4)在单纯型先天缺牙患者中，现存恒牙的牙冠宽度较国人正常值偏小，差异显著，提示牙齿形态与多个牙先天缺失有一定相关性。

Compared with the monopolar electrode system, bipolar electrode system was associated with a reduction in operation time and absorption volume of uterine distention medium and makes less influence on blood biochemistry.

与单极电切术比较，双极电切术手术时间短，膨宫液吸收量少，对患者生化的影响更小。

In this dissertation, first, based on theory of cutting tooth about the gleason spiral bevel gear, the equation of meshing in the process of cutting tooth, the surface equation of generating gear as well as the general tooth surface equation of the double circular arc spiral bevel gear, using GB12759-1991 type of double circular arc gear as a basic gear profile, a three-dimension solid model of double circular arc spiral bevel gear which has the good adaptability was carried out by used of Unigraphics software;Second, by researching of the algorithm about contact and collision as well as various contact types based upon Contacting Finite Element Method, a foundation was laid for selecting the contact type in analyzing contact stress of double circular arc spiral bevel gearing;Finally, through the connection port of PARASOLID between UG software and ANSYS/LS-DYNA software, the three-dimension solid model of double circular arc spiral bevel gearing obtained above in UG was imported into ANSYS/LS-DYNA, a finite element analyzing about contact stress of double circular arc spiral bevel gearing was carried out by applying new loading method.

本文首先基于格利森弧齿锥齿轮加工原理及切齿啮合过程中的啮合方程、产形轮齿面方程以及双圆弧弧齿锥齿轮的齿面方程，选用GB12759-1991型双圆弧齿轮基本齿廓为基准齿形，利用Unigraphics软件的建模功能，绘制了有较好适应性的双圆弧弧齿锥齿轮传动三维实体模型。其次，描述了应用有限单元法进行实体接触与碰撞问题算法的公式，研究了有限元分析中的各种接触类型以及双圆弧弧齿锥齿轮接触应力分析中所选择接触类型的依据。最后，通过UG软件和ANSYS/LS-DYNA之间的PARASOLID接口工具包，将UG软件中得到的啮合齿轮模型导入ANSYS/LS-DYNA有限元分析软件，给出一种新的加载方法，进行了双圆弧弧齿锥齿轮传动的接触应力的有限元分析。

Friends of Grace paper products company nanshan existing tri-color, two sets of two-color watermark machine production lines, production machinery configured carton including Taiwan detachable three-color watermark machine, MY --- 2500-type rotary slotted angle cutter, FY ---2500 points±paper type pressure-ray machine, ML --- 1300-type die-cutting machine, DX --- 1300 nail box machines that can contract a variety of specifications of high, middle and low-grade, single, double corrugated boxes, carton manufacturing, at present our factory has the production of 20 million square meters in three of five criteria for corrugated box production capacity, 50,000 cartons per day of production scale.

友宏公司南山纸品厂现有三色、双色水印机两套生产线，配置的纸箱生产机械包括台湾可分离式三色水印机、MY---2500型轮转开槽切角机、FY---2500型薄刀分纸压线机、ML---1300型模切机、DX---1300钉箱机等设备，能承揽各种规格的高、中、低档，单、双瓦楞纸箱、纸盒的制造，目前我厂已具备年生产2000万平方米三层、五层标准瓦楞纸箱的生产能力，每日5万只纸箱的生产规模。

Full length LMP2A cDNA was firstly incised from pGEM-T-LMP2A with EcoR Ⅰ, Sma Ⅰ digestion, and then inserted into eucaryote. expression plasmid pCIcc controlled by CMV promoter. The CMV-LMP2A-SV40 expression unit was digested by ClaI, and inserted into E1-substituted adenovirus vector pAx1cw. Then the LMP2A recombinant adenovirus vector was cotransfected into 293 cells together with EcoT22I digested Ad5-TPC.

将带有LMP2A cDNA的重组质粒pGEM-T-LMP2A用EcoR Ⅰ、Sma Ⅰ双酶切下LMP2A cDNA，并将其插入含同样酶切位点的真核表达质粒pCIcc中，使其受控于CMV启动子下；用ClaI切下CMV-LMP2A-SV40表达单元，插入E1、E3区替代的腺病毒载体pAX1CW，选择正确的克隆pAX1CW-LMP2A与Ad5 DNA-末端肽复合体共转染293细胞，通过同源重组获得复制缺陷型的重组腺病毒(Ad5-LMP2A)。

Because, intrinsic flaw length is treated as a material property in fracture mechanics. Follow previous paper about single indenter, in order to understand double indenters behavior, we do double indenters and analysis the relation between micro and macro crack behavior.

因缺陷尺寸为材料破坏力学中之材料参数，与材料本身的颗粒尺寸存在正相关；承袭前人文献对单一刀头贯切之探讨，进而施作双刀头贯切试验，期能理解刀头与刀头间之互制行为，并进而分析比较巨微观尺度裂缝行为之一致性。

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。

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。