螺旋

Results among 15 cases, eight cases of Loose bodies about right keen joint;three cases of left keen joint;three cases of both keen joint ;one case of pilosity dissociates bodies;two cases with joint effusion ;six cases with soft tissue swelling.16-slice SCT with 3D reconstruction demonstrated stereoscopic morphology of normal and lesions clearly with MPR correctly demonstrated details and density ,shape and size of lesions.conclusions Sixteen-slice SCT with 3D and MPR techniques can provide valuable spatial information of diseases in bones and joints of wrist and foot which correlated well with that of pathological anatomy .

结果 15例患者中，右侧膝关节游离体8例，左侧3例，双侧3例，多发游离体1例；其中2例伴有关节积液，6例有关节周围软组织肿胀。16层螺旋CT的3-D图像可清晰显示游离体的立体形态，MPR图像则可以多平面，多角度地观察游离体的大小、形态、密度、位置，对病变显示满意。结论多层螺旋CT重建能提供骨关节病变非常有价值的空间关系信息，其表现接近病理解剖，临床应用价值大，有利于临床医师选择治疗方案、制订手术计划。

Aim at disadvantages of traditional measuring methods,such as lower precision and complicated operations,a precise measuring method for pitch circle helix angle of involute spur gear by CMM was put forward.

针对渐开线圆柱斜齿轮分度圆螺旋角的传统测量方法精度低、操作复杂等缺陷，提出用三坐标测量机精确测量圆柱斜齿轮分度圆螺旋角的方法，介绍了其测量原理及步骤，并进行了测量精度分析。

The model of programmed crystallization of SPM was proposed based on the moment transformation of the population considering the agglomeration. The optimal temperature-time curves in a batch crystallizer which maximized the terminal mean size and mean weight size can be determined from the application of the Pontryagin Maximum Principle. The calculated crystallization results heating under optimal temperature were compared with ones under linear or natural heating temperature.

根据第四章所得到的螺旋霉素晶体二次成核和晶体生长和布朗扩散引起的聚集动力学，利用第六章所描述的晶体尺寸分布的各阶矩对时间的一阶导数所构成的自封闭的一阶常微分方程组，采用庞得里亚金极大值原理，以温度为控制变量，在满足某些约束条件下，以最大平均尺寸和最大晶体重量平均尺寸为性能指标，计算出了螺旋霉素间歇结晶的最优温度—时间曲线，并同线性加热和自然方式进行了比较。

However, in practice, if the specified data of the positions of the body are inaccurate. The intersection of the projective spaces becomes an empty set. The goal of the thesis is to deal with this kind of problems.

本文的目的在求解这些问题，本文中利用螺旋的定义修改原本的交集线性方程式以代入最小平方法得到描述此位移的最佳螺旋。

Its work is the process of spraying by the pulp put out the warehouse I expected or high water concentration pulper, as well as the initial concentration of the pulp slurry into the mouth of the double helix squeeze machine feed the population through the right and left of the screw shaft Reverse spin, by the end of the pulp to be on the other side.

其工作过程是纸浆由喷放仓的出料口或高浓水力碎浆机的以及经初步浓缩的浆料出浆口进入该双螺旋挤浆机的进料口，通过左、右螺旋轴的反向旋转，纸浆由一端被推向另一端。

The locomotive direction of typhoon was the same with that of the most intense spiral rainband.

食指状和"人"字形的外螺旋雨带、螺旋雨带最大回波强度区的移动与台风前进方向一致。

Based on the experiments, the relations between the Nusslt number Nu, and Reynolds number Rc are obtained by wall-temperature method, and it is analysised that the economy and the manufacturing method of a helical recuperator.

本文在较大的迪恩准数范围内用壁温法研究了螺旋回热器的传热性能，得到了其传热性能关系式，并分析了螺旋回热器的制造方法及其经济性能。

The transepicondylar axis of different position has no effect on volume rendering technique measuring the humeral head retroversion angle with multi slice spiral CT.The top view at which lateral epicondyle of the humerus showing minitriangulum and the anterior surface of the distal humerus articulation with the forearm being shaded is more simple,faster and precise for the volume rendering technique measuring the humeral head retroversion angle with multi slice spiral CT.

结论］肱骨头扭转角变异较大，肩关节假体扭转角设计应个性化；肱骨远端不同位置内外上髁轴线对多层螺旋CT容积再现测量肱骨头扭转角没有影响；俯视位观察肱骨，当外上髁露出呈小三角形、肱骨远端前关节面被肱骨头遮盖重叠的位置是多层螺旋CT三维重建测量肱骨头扭转角的更简单、更快捷而且准确的测量位置。

Something, such as the thread of a screw or the spiral condenser in a still, that resembles a worm in form or appearance.

有螺纹状的物品某物，如螺旋线或蒸馏器的螺旋冷凝器，在构成或外表上像蠕虫

Continuous screwy chip which is chip' s natural shape and geometrical para meter describing it are advanced.

指出切屑的自然状态是连续螺旋形切屑，描述了连续螺旋形切屑形状的参数。

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。