查询词典 screw

Objective To investigate the effect of posterior pedicle screw instrumentation and determine the impact of alternative surgical strategies to provide guidance for the operation planning. Methods A detailed three-dimensional finite element model of a 40° scoliotic lumbar with pedicle screw instrument were constructed by using the commercial finite element software ANSYS.

目的 通过有限元计算与刚体动力学相结合的方法，模拟后路椎弓根螺钉系统治疗脊柱侧凸的矫形过程，研究矫形过程中的生物力学特性，探讨不同矫形策略对临床结果的影响，为脊柱侧凸的手术规划提供依据。

Conclusion］There are the same correct effectiveness and the biomechanical stability in the treatment with the slidable pedicle screw system and universal pedicle screw system,meanwhile there is no effect in the adolescent growth.

结论］滑动椎弓根钉系统治疗脊柱侧凸同样能够达到通用椎弓根钉系统相同的矫形效果及生物力学稳定性，同时它不影响青少年生长发育。

Fig. 3-5 Fixation with one tibiotalar screw and one talotibial screw.

253：212， 1990。图 3-5 使用一根胫距螺丝钉和一根距胫螺丝钉的融合术

All the patients returned to normal daily life after a mean time of 5.3 months (3 to 11 months) Conclusions Tarsometatarsal joint injuries can be treated well by close reduction and percutaneous screw fixation with less operative lesion and lower incidence of soft tissue complications. Reduction of the middle column with screw insertion along the direction of the Lisfranc ligament is the key to reestablishment of the stability of the tarsometatarsal joint complex.

闭合复位经皮螺钉内固定手术创伤小，软组织并发症低，能有效治疗跖跗关节复合体损伤；中间柱复位并沿Lisfranc韧带方向插入螺钉内固定是重建跖跗关节复合体稳定性的关键。

The performance of trapeziform labyrinth screw pump was investigated by changing geometric parameters of trapeziform screw.

分析了梯形螺纹几何参数对迷宫泵性能的影响。

Forty-sixe cases of symptomatic dynamic lumbar spinal instability were selected from the Ninth and Second People's Hospital from March 2003 to March 2007. They received dorsal spinal strenosis surgical decompression, titanium JJXA segmental pedicle screw fixation, intervertebral pace brace, intervertebral disc resection, with the sideward and the forward annulus fibrosus retained, endplate cartilage zone curetted, then received intervertebral bone particles graft, and pedicle screw compression. The patients were followed up for more than 15 months. The good and excellent rate was 91.3%.

选择2003-03/2007-03南阳市第九人民医院和南阳市第二人民医院收治的动力性腰椎不稳患者46例，行后正中入路下的椎管减压手术，钛制JJXA椎弓根螺钉置入，并行椎间隙撑开，双侧切除椎间盘保留侧方以及前方的纤维环，刮除终板的软骨层，行椎间颗粒骨植骨，椎弓根螺钉系统加压固定。46例随访时间≥15个月，优良率91.3%。

This standard covers gaging methods for conformance of Unified Screw threads and provides the essential specifications for applicable gages required for unified inch screw threads.

这个标准覆盖了统一螺纹一致性的测量方法并提供了用于统一螺纹的量规的关键规格。

Screw Thread Gaging Systems for Dimensional Acceptability - Inch and Metric Screw Threads Errata - 1994

允许尺寸的螺纹测量系统英制和米制螺纹（UN， UNR， UNJ， M，和 MJ

In order to develop a screw press for cold pressing de hulled double low rapeseed, a small capacity double stair and multiple stage compression screw press for cold expressing was designed and constructed based on numerous tests.

为了开发适于双低油菜籽脱皮冷榨的螺旋榨油机，在大量实验研究的基础上，设计并研制了一种新颖的小型双阶多级压榨的冷榨机。

Barrier screw (also called double flight screw) is a design to increase plasticizing capacity.

屏障式螺杆是提高塑化能力的一种螺杆设计。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。