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Methods Implants with different screw thread angles and shapes were divided into three groups.

方法采用三维有限元法,分别对种植体施加30牛顿垂直和斜向45°两种方向的集中载荷,对不同螺纹顶角螺纹形状分别为对称、上平下斜、上斜下平的种植体-骨界面进行应力分析。

Distributions of corneal curvature With the formula 〓 Sin〓αwhich is about the curvatures of oblique meridians on toric surface, the theoretical values of anterior, posterior and total corneal radius of curvature of the oblique meridians were obtained.

3角膜曲率分布根据托力克面斜轴子午线曲率F'计算公式〓,确定角膜前、后表面斜轴子午线曲率及斜轴子午线总角膜曲率的理论值,并通过分析该理论值与实测值之间的一致性,明确角膜曲率分布特征。

When the burring process of 12×4J wheel is processed taking the deformation area as the plane stress condition,the deformation characteristics of normal and radius directions are studied,which is influenced by the factors such as height and the inner hole initial radius and the deformation law of circle strain.

利用斜冲模对12×4J轮辐进行翻边时,将变形区看做是平面应力状态,探讨了翻边高度、初始孔径及斜冲模角对翻边变形区径向应变和轴向应变的影响,对12×4J轮辐翻边不同斜冲模角下的冲压力变化规律进行了计算。

Microstructural studies of three types of tectonites from eastern Liaoning area with different deformation characteristics (gneissic, banded and mylonitic structures) by means of microstructural analysis, transmission electron microscope analysis shows us they have different microstructures and Submicrostructures.

通过显微和亚微分析揭示出辽东地区三种变形特点的角闪质岩石(片麻状斜长角闪岩、条带状斜长角闪岩和糜棱状斜长角闪岩)具有差异的显微及亚微构造。

Based on both oblique functions and magnitude of the patterns, 59 cases of V pattern were divided into three groups and treated with three surgical methods, vertical transposition of horizontal recti, inferior oblique weakness and vertical transposition of horizontal recti combined with inferior oblique weakness.

59例V征患者根据下斜肌功能及上下25°注视时的斜视度差分别采取水平肌后徙和/或缩短+下斜肌减弱术、水平肌后徙和/或缩短+下斜肌减弱术+水平肌垂直移位术、水平肌后徙和/或缩短+水平肌垂直移位术,术前术后检查眼位及双眼视功能情况,观察三种手术方式的效果。

The Paleoproterozoic Beidahe Group-complex remains as continental shivers in the interior of the North Qilian orogen. In its early stage of development, there occurred abundant amphibolite. The protolith of the amphibolite is basalts. The Alk-∑FeO-MgO plot, REE features and Rittmann index show that the protolith belongs to the calc-alkaline suite and exceptionally shows the subalkaline character. The rock is characterized by higher Al2O3 and ∑FeO and lower Mg#, indicating that it has a higher degree of compositional evolution and that the formation of volcanic rocks is related to activation of older crust. Highly fractionated REE patterns and amphibolite on the Ti-Zr-Y plot, Ni-FeO/MgO plot and Ta/Yb-Th/Yb plot all indicate the characteristics of volcanic arcs and active continental margins. On the geochemical diagram of basalt, the overall REE features are in the main analogous to those of calc-alkaline island-arc basalt, with Sr87/Sr86=0.71617–0.72033,Nd143/Nd144=0.512414–0.512495 and εNd=–2.79 to –4.37,εSr=245.78–305.3, showing that the magma was derived from the crust or subjected to contamination with the lower crust below the continent.

提要:以大陆碎块形式残存于北祁连造山带内部的古元古代北大河岩群早期发育有大量的斜长角闪岩,其原岩为玄武岩,Alk—∑FeO—MgO图解,REE特征,里特曼组合指数等均显示斜长角闪岩属钙碱性系列范围,个别显示弱碱性,斜长角闪岩具有较高的Al2O3,∑FeO和低的Mg#,这些特点反映其成分演化程度较高,表明火山岩的形成与古老地壳的活化有关,有较强分异的稀土元素分配模式,在Ti—Zr—Y图,Ni—FeO/MgO图解和Ta/Yb—Th/Yb图解上斜长角闪岩均显示火山弧或活动大陆边缘的特点,在玄武岩的地球化学形式图,稀土元素整体特征与钙碱性岛弧玄武岩基本相同;87Sr/86Sr=0.716 17~0.720 33, 143Nd/144Nd=0.512 414~0.512 495,εNd=-2.79~-4.37。

Cases of the ocular torticollis caused by congenital paralysis of superior oblique muscles were analysed.

分析先天性上斜肌麻痹所致的眼性斜颈35例,术前测量第一眼位和头倾向患眼侧时的垂直偏斜度。

Converted the cutting force and gravities of every parts of the machine tool on the integration slant machine bed for a typical condition,and gain load parameters on the integration slant machine bed when cutting positions are located at both ends and the middle of the work-piece.

论文对一体斜床身进行三维实体建模,把典型工况下的切削力、床身上各机床零件的重力折算到一体斜床身上,得到切削位置分别位于工件两端和中间时一体斜床身载荷参数。

In this paper,a three-dimensional model of integration slant machine bed was established.When cutting force and gravities of all parts of the machine tool are converted under a typical condition,bed load parameters on different cutting positions are gained.

对一体式斜床身进行三维实体建模,把典型工况下的切削力、床身上各机床零件的重力折算到一体式斜床身上,得到切削位置分别位于工件两端和中间时一体式斜床身载荷参数。

The former fold is also called flow fold, consisting of a series parallel folds characterized by closed but well developed synclines with wide and gentle anticline in between. On thecontrary, the latter fold is characterized by completely developed anticlines with wide and gentle box shaped syncline in between.

隔档式褶皱又称流状褶皱,由一系列平行褶皱组成,其特征是背斜紧闭,发育完整,而两个背斜之间的向斜平缓开阔;隔槽式褶皱与前者相反,特征是向斜紧闭且发育完整,而两个向斜间的背斜平缓开阔,常呈箱状。

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