矢

Objective To explore the indication, advantage and disadvantage of modified or classical technique of intraoral sagittal split ramus osteotomy for correction of mandibular prognathism.

Obwegeser(1957)和Dolpont(1961)创建的用于矫治下颌畸形的经典下颌升支矢状劈开截骨术(sagittal split ramus osteotomy，SSRO)被认为是正颌外科的里程碑。

Methods 23 patients with mandibular prognathism and 9 with mandibular hypoplasia were undergone mandibular setback or advancement respectively by way of bilateral sagittal split osteotomy.13 parameters were measured using lateral cephalometric X-ray films taken before and post treatment.

下颌前突患者23例与小颌畸形患者9例，分别行双侧矢状劈开后退或前徙下颌，手术前后拍摄X线头颅定位侧位片，进行头影测量，测量项目13项，测量数值配对t检验，并将下颌后退距离与各测量项目变化值作相关分析。

The Redeemer retains the assault cannon and flag launchers of the Crusader, but eschews the hurricane bolter sponsons for colossal flame projectors that send a billowing tide of burning promethium into the thick of the foe.

它保留了十字军级的突击炮和榴弹发射器，但是用巨大的火焰喷射器代替了两侧的暴风爆矢枪，让那些敢挡在它面前的敌人陷入如潮涌动的钷火之中。

Assuming that the stratons are heavy and the interaction isdominantly a pseudoscalar potential and a static vector potential,we derive the SU(4)mass splitting for mesons.

在层子质量很重的假定下，考虑相互作用是赝标势和静矢势为主，导出了介子 SU(4)质量分裂公式。

The pyro can use bolt of fire at will but must pay 3 power points per use.

操焰者可随意使用火焰矢，但每次使用须支付3点灵能点。

On each sub-interval, the quartic Bézier curve segment has one freedom degree that is used to adjust the shape of the segment.

zier曲线的形状。自由度由极小化样条曲线和辅助曲线的一阶导矢差的平方的积分确定。

The radius vector of each solid is always a positive length.

每个立体的矢径总是正值长度。

The results indicated that the radius vector of spinal canal is still a better index to diagnose central LSS, there is important value for the spinal cross-sectional area and thecal sac area.

研究发现椎管径矢仍是诊断中央椎管狭窄的良好指标，椎管面积和硬膜囊面积也具有重要价值。

The methods above are used in practical data-processing. The errors of the tangent vector, the radius of curvature and the focusing are obtained through curve fitting and ray tracing. Finally, the charts are ploted by the matlab emulation.

将以上方法用于实际数据的处理中，对一组透镜表面数据进行拟合、分析，最终得出透镜的表面形状误差、各点的切矢、曲率半径误差以及光线的聚焦误差，并用matlab仿真出曲线图。

Case-Based Reasoning; ocean eddy ; case representation ; case library ; Radius Vector Serial Based on Barycentre; spatial similarity

案例推理；海洋涡旋；案例表达；历史案例库；重心矢径序列；空间相似性

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。