牵引

Power for the tractor beam emitters is provided by variable phase graviton polarity sources feeding sub-cochrane subspace field amplifiers. Phase accuracy of less than 2.7 arc-seconds per millisecond is required for precise control of a tractor beam.

牵引光束发射器的动力供给是靠子空间的Sub-Cochrance范围放大器，来供给牵引光束使用的可变相位极性，为了要正确地控制牵引光束的相位正确性要求，因此其相位变化必须少於每毫秒的2.7弧秒。

The update instrument can achieve the purposes of tiny-hurt, rapidness, combining rapid traction and reposition with sustaining traction and fixation when be used to treat fracture of zygomatic bone.

改进型颧骨颧弓骨折牵引复位固定器更加便捷实用，实现了微创、快速牵引复位与持续牵引复位固定相结合治疗颧骨颧弓骨折的目的。

The increases in the cell density in the sutures of the treated groups were higher as compared to the two controlled groups for 3 7 14days indicating that cellular hyperplasia in the expanded sutures were accelerated by the protraction .The cell density in the palatomaxillary sutures and in the frontomaxillary sutures differed in increase ways at the two time points of 21th day and 28th day suggested that the mode of bone formation in the circummaxillary sutures is different from one another..5 The expression of Proliferating Cell Nuclear Antigen were always higher than the controls in the course of this study,which i

而在21、28天时间点两个骨缝与对照组相比在相同时间点增长程度明显不相一致，提示我们不同的上领骨周围骨缝在前牵引作用下改建方式过程可能不一。5、在上领前牵引作用下，上领骨的额领缝内的PCNA的阳性表达一直高于对照组，提示前牵引促进上领骨周围骨缝内细胞增殖活动增强。

［Objective］ To analyze the outcome of internal fixation for occipitalization with atlantoaxial joint dislocation by posterior decompression and occipitocervical fusion ［Method］ From December 2005 to June 2007,8 patients with occipitalization and atlantoaxial joint dislocation received removal of the posterior arcus of atlas and the enlargement of the posterior edge of the foramen magnum after skull traction performing for an average of 135 daysAll patients were operated on by posterior craniocervical fusion using cervifix internal fixation system and autologous ilium graftsThe clinical efficacy after operation was analyzed by Japanese Orthopaedic Associationneural function score ［Result］ All the patients were followed up from 6 months to 2 years, average of 15 monthsNo complication was foundAtlantodental interval was 5~9 mm before and 4~6 mm after skull tractionAtlantoaxial joint dislocation didn't completely reducedThe neurological defects were improved to some extents according to the JOA scoreImageology showed all patients had full decompression and bony fusionThe loosening or broken internal fixation was not found ［Conclusion］ Posterior decompression and fusion is a feasible method for the treatment of occipitalization with atlantoaxial joint dislocation,and the clinical effect is satisfactory

分析后路减压枕颈融合内固定术治疗合并寰枢关节脱位的寰椎枕骨化临床疗效。［方法］2005年12月至2007年6月间，对8例合并寰枢关节脱位的寰椎枕骨化患者在行颅骨牵引治疗一段时间（12~16 d，平均135 d）后采用枕骨大孔后缘扩大，寰椎后弓切除减压取自体髂骨枕颈融合Cervifix系统内固定术，手术后采用日本骨科学会神经功能评分分析临床疗效。［结果］8例患者随访6个月~2年，平均为15个月。8例患者无一例出现术后并发症，术前寰齿前间隙为5~9 mm，经颅骨牵引后为5~7 mm，寰枢关节脱位未能完全复位。手术前后JOA评分示神经症状均有不同程度恢复，影像学检查示枕颈区减压充分植骨区获得骨性融合，无一例出现内固定松动或断裂。［结论］合并寰枢关节脱位的寰椎枕骨化患者术前仔细评估影像学改变，采用颅骨牵引一段时间后行后路减压枕颈融合内固定术的治疗方案是合理可行的，且临床效果满意。

Few branches and little femoral head blood perfusion were observed in all of retinacular arteries, while hip joint was internally rotated with the sick leg straightened in the patients.

对12例青壮年股骨颈骨折在2～5 d内进行旋股内、外及支持带动脉造影，造影中均采用中立位无牵引、中立位5 kg牵引及内旋位无牵引3种形式。

The femoral circumflex arteriography of the normal leg was done in 8 patients, and three of them were simultaneously done in a postion of internal rotating of straight leg. Results Comparison with the arteriographic findings in absence of traction, all retinacular arteries but inferior arteries were depicted few branches and less femoral head perfusion in all 9 patients, especially in that of medial femoral circumflex arteriography, as hip joint was tractating in neutral position with the same speed and volume of injecting contrast medium and, the veins were demonstrated poorly or delayed.

结果同一血管部位，同等对比剂注射流率、总量造影，与中立位无牵引状态下造影所见比较，9例患髋中立位牵引时，除外下支持带动脉，所有未损伤的支持带动脉均有不同程度闭塞，相应股骨头颈部灌注不佳或几乎无灌注，静脉显影延迟或显示不清，4例牵引力由3kg增至5kg时，上述改变更为明显；5例患髋维持伸直内旋位时，所有支持带动脉尤其细小分支未见明确显示，股骨头灌注差或未见明确灌注，改变甚于牵引时；2例正常髋内旋位时造影改变类似。

Objective: To study the excellent traction forces. ang les and time for cervical spondylopathy.

目的：探讨颈椎病牵引的最佳牵引力，牵引角度和牵引时间。

The mode of tracklayer traction used that crawler traction device and wheel hub axis united to control the traction.The question including the traction force match of crawler and moving axis and the stability of running speed directly concerns tracklayer track-lying quality and efficiency.

由于铺轨机组牵引采用履带式牵引装置和轮轨式动力轴联合操控牵引的方式，履带和动轴牵引力匹配，走行速度的稳定性，直接影响铺轨的质量和效率。

Methods One band with a lingual button was bonded on the crown of lingual inclined lower second molar, then a removable, uprighter was put on, the tipping molar was uprighted by using buccal traction force produced by the latex elastics between the button and the hook of removable uprighter.

先在患牙上装戴一焊有舌侧扣的带环，再将预先制作好的带颊侧牵引钩的下颌可摘式磨牙颊向竖直器装戴就位，然后在舌侧扣与矫正器的牵引钩之间使用乳胶弹力圈对患牙进行颊向牵引。待患牙扶正后再使用固定矫正器进行精细调整。

It is a kind of double-twist star quadding machine with motorized taking-up, tension control system, twist pitch maker(pre-spiraller), enclosed bow type carriage, separator, yarn binder, capstan wheel, bar traverser and semi-automatic reel loader-unloader, etc.

生产线技术特点：焊接电流自动跟踪牵引速度特殊设计的成型工具，确保焊接的稳定进行特殊设计的电气工艺控制板，确保焊接平稳能实现设备的停车再启动的功能，满足生产线间断操作废带收卷速度自动跟踪牵引速度配置清晰高倍显示焊缝溶池的监视系统高速星绞设备概述：本机主要用于长途通信电缆的四线组绞合，是一种双节距星绞机，由主动收线、张力控制装置、扭矩发生器、封闭弓式绞笼、分离器、扎纱装置、牵引轮、光杆排线及半自动线盘装卸装置等组成。

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。