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This article elaborates the full-scale test at present electric railway bow net system, designs a new control system to fall the Pantograph fall and introduces a home unusual, controlled Pantograph fall in the busy host skeleton line. This research provides reference for the furthur study of bow net protection system by artificially creating the real appearance of bow net relations.

从实际试验出发，阐述了在目前电气化铁路弓网系统中，对弓网保护装置所起作用的一种验证方法，同时构思和设计了一种新型的受电弓滑板掉块控制系统，并介绍了一次国内少有的、在繁忙主干线上控制受电弓滑板掉块造成人为弓网关系再现的真实过程，为进一步开展弓网保护系统研究提供参考。

5 Create the inferior screw model Bisectioning the included angle between exterior and interior screw and theincluded angle between ecto-upper and ento-upper screw in AutoCAD2006 software,Create a plane traverse the two bisection points and the core of the pedicle.

采用上述辅助定位后如遇椎弓根部穿破情况则需要手动调整螺钉以使螺钉刚好与原穿破侧椎弓根骨壁相切。 1.2.5创建下侧进钉方向的椎弓根螺钉模型：在AutoCAD2006程序中将椎弓根螺钉内外夹角、上方夹角两等分，由同侧两等分点与椎弓根中心点共同创建一平面，依该平面与同侧球在下终板平面交点创建下方螺钉模型。

Six cadavers were prepared for necroscopy, operative procedure of ILIF were simulated on L3-S1, and all related important anatomic structure and their relationship were observed and record. ILIF with transpedicle screw fixation were also performed with cage insertion.3. Twelve fresh frozen bovine lumbar functional spinal units were prepared for biomechanical testing. According to the different treatment order, the specimens were devided into 7 groups, which included: 1intact specimens, 2specimens were treated by left unilateral facetectomy and had homolateral anatomical threaded cages inserted, 3 TLIF with homolateral pedicle screw fixation, 4 TLIF with bilateral pedicle screw fixation, 5 specimens had anatomical threaded cages inserted on the left by intertransverse process approach, 6 ILIF with homolateral pedicle screw fixation, 7 ILIF with bilateral pedicle screw fixation.

方法1、对20名正常志愿者L3-S1节段进行CT增强+三维重建检查，在三维重建图形上测量横突长度、上下横突间距、椎间孔外椎间隙高度及斜径，观查横突间区域血管走形特点并测量血管内径，然后进行统计分析及评价。2、采用福尔马林固定尸体标本六具，模拟ILIF手术对L3-S1节段进行操作，观察横突间区域重要结构的位置和毗邻关系，并模拟同侧椎弓根钉和单枚椎间融合器的置入过程，探讨该术式存在的问题并改进。3、采用小牛脊柱运动节段标本12具，依序进行不同处理后分为以下7组：⑴正常对照组CG⑵左侧小关节切除+椎间融合器植入组(TLIF⑶TLIF附加同侧椎弓根钉固定组；⑷TLIF附加双侧椎弓根钉固定组；⑸左侧横突间入路椎间融合器植入组ILIF⑹ILIF附加同侧椎弓根钉固定组；⑺ILIF附加双侧椎弓根钉固定组。

Methods:The 310 pedicles(in 31 vertebrae) twined with the wire of 1.0mm in diameter were taken for radiological study.The anteroposterior,lateral and superoinferior roentgenograph were performed,the relationship between the projection of pedicle screw and that of vertebrea on lateal x-ray films was investigated.

材料和方法：在31套腰椎骨标本上(310个椎弓根)用1mm软钢丝在椎弓根最狭窄处缠绕，按人字嵴顶点进针方法打入椎弓根直钢丝，拍正侧位片及横断面片，观测直钢丝在椎弓根及椎体内的位置，并推算进钉深度比率。

Of the top of the superior aortic recess extended to the level of the aortic arch from which the branchiocephalic trunk arises. At the level of the aortic arch, 100%of the lymph nodes of superior vena cava were located among the aortic arch, superior vena cava and trachea. At the level of azygos vein, 100%of the lymph nodes of azygos vein and the superior aortic recess were located among the superior vena cava, arch of azygos vein, trachea and concavity of aortic arch.

主动脉弓和奇静脉弓在同一横平面占20.00%±7.30%，40.00%±8.94%的奇静脉弓在主动脉弓凹面平面；②80.00%±7.30%的主动脉上隐窝上界位于主动脉弓右前端头臂干起始处；③在主动脉弓平面，腔静脉后淋巴结位于主动脉弓、上腔静脉和气管之间，出现率为100%；④在奇静脉弓平面，奇静脉弓淋巴结和主动脉上隐窝位于上腔静脉、奇静脉弓、气管和主动脉凹面所围成的气管前间隙内。

At last, ILIF in segment L3-4 and L4-5 is feasible. 2. There are enough operation space for ILIF in L3-4 and L4-5 with the root being retracted gently. And it is feasible to insert a couple transpedicle screws homolaterally. The intertransverse area was too narrow to perform ILIF on L5-S1.3. ILIF provide greater biomechanical stability than TLIF. while there was no significantly different stability between ILIF with homolateral or bilateral pedicle screw fixation. Adequate postoperative stability can be achieved by intertransverse lumbar interbody fusion with homolateral pedicle screw fixation.4. ILIF with transpedicle screws fixation homolaterally was a safe, convenient and effective operation, and less intraspinal complications were occurred of ILIF than TLIF.5. The fusion condition was satisfaction in ILIF group, which was better than TLIF group.

横突间入路腰椎椎体间融合术在L3-4、L4-5节段具有可行性。2、在L3-4、L4-5节段可提供足够的空间行ILIF手术，并可通过同一切口附加椎弓根钉固定，操作安全、简便。L5-S1节段横突间区域较小，操作困难，不适合行ILIF手术。3、ILIF手术术后生物力学稳定性有所下降但优于TLIF手术；ILIF附加同侧椎弓根钉固定与附加双侧椎弓根钉固定生物力学稳定性相当，使用ILIF术式附加侧同椎弓根螺钉固定，可提供较好的即刻稳定性。4、ILIF手术及附加同侧椎弓根钉固定是一种安全、简便、有效的手术方式，在减少椎管内并发症方面具有优势。5、ILIF手术可获得较好的融合率，其融合情况从组织学观察稍好于TLIF手术。

Results Compared with T1, statistically significant increases were recorded in all dentoalveolar and dental arch widths, except for the intermolar width measured fossa, and also arch perimeter at T2 (P＜0.05). No significant changes were found in the arch depth.

结果 与T1阶段相比，T2阶段除了磨牙中央窝点间牙弓宽度测量项目外，所有牙槽弓、牙弓宽度测量值以及牙弓周长测量值均显著增大（P＜0.05），但牙弓长度的变化无统计学意义。

ResultsCompared with T1, statistically significant increases were recorded in all dentoalveolar and dental arch widths, except for the intermolar width measured fossa, and also arch perimeter at T2 (P＜0.05). No significant changes were found in the arch depth.

结果与T1阶段相比，T2阶段除了磨牙中央窝点间牙弓宽度测量项目外，所有牙槽弓、牙弓宽度测量值以及牙弓周长测量值均显著增大（P＜0.05），但牙弓长度的变化无统计学意义。

Other contenders for best archer for the price are the Bakemono Archer (Shortbow, 8 Gold, 4 Resources), and the Bandar Archers (Longbows for 20 gold) putting the Tien Chi Composite Bowman in extremely exclusive company.

拥有最好性价比弓手的其他竞争者妖弓手（短弓，8金，4资源）和Bandar弓手（20金长弓）更使天齐的复合弓弓手达到了不可逾越的高度。

In succession, by using of the simulative program under various running conditions, we studies the different effects that various parameters on the dynamic current-collecting such as running speed, span length, ocs tension force, masses of pantograph head and framework, damping capacity and stiffness etc. Moreover, measures are suggested to improve the quality of current-collecting, especially the idea of active control scheme, which restains the fluctuation of contact force by modulating the air pressure of pantographs airbag.

利用弓网仿真程序对各种工况的弓网受流进行模拟仿真，分别研究了列车运行速度、接触网跨距、接触线张力以及受电弓弓头和框架质量、阻尼、刚度等对弓网系统受流的影响，提出通过主动控制技术对弓网系统的振动进行抑制的气囊调节方法，将受电弓气囊的气压值作为控制对象，通过对气囊气压的调节来抑制弓网接触压力的波动。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。