查询词典 reflected ray

Methods:Based on the principle of finite element method and getting three-dimensional coordinates from lateral and frontal cephalometric X-ray films by Baunrind,the landmarks on cephalometric X-ray films were selected as nodes,by which the hard tissue was divided into four noded and pyramidal elements according to anatomic structures and their relationship.

基于有限元分析和Baunrind用头颅正、侧位定位片获取标志点三维坐标的原理，以硬组织标志点作为节点，按照解剖结构及结构间关系对硬组织进行单元划分。

Objective: To retrospectively study the X- ray and CT appearance of ossifying fibroma of the long bone and to explore the diag nostic value of X-ray and CT.

目的 ：回顾分析长骨骨化性纤维瘤的X线与CT表现，探讨X线与CT诊断价值。

Millisecond time scales in the X-ray light curve of Scorpius X-1. The estimated sizes of these occulting TNOs are about or less than 100 m. This is the first time that TNOs of such a small size are detected. Our discovery of the X-ray occultation demonstrates a new method to study smaller TNOs.

所以，我们在这里介绍了我们利用X-ray波段的掩星方法，藉由利用RXTE卫星观测天蝎座X-1的数据，在毫秒尺度找到了一些可能的X-ray掩星事件，而这方法将可让我们了解一些大小在100公尺左右或更小的物体的分布情形，而这也是我们第一次在X-ray波段所发现掩星事件，而这方法的持续研究将能让我们对於太阳系的形成会有更多的帮助，因次在此提出来和大家分享。

The X-ray crystal structure of One of these organotin complexes was determined employing X-ray crystallography.

并利用X-射线四圆衍射确证了其中一个配合物的晶体结构，为更深一步的研究其构效关系及该类化合物在体内的作用机制奠定了一定的基础。

Osteogenous rules, rate and quantification were investigated by the bone ingrowths of PCHA with the methods of X-ray, soft X-ray, fluorescence tag, histological section, and computer-aided image analysis procedure.

经X线照相、软X线显微照相、荧光标记分析、脱钙组织学切片、不脱钙骨磨片以及计算机病理图象分析等6种方法，观察PCHA在宿主骨内的成骨规律、速度、和计量。

A 2. 5～5. 5 MHz transducer was used according to the acoustic depth of the heart examined. Group B was used x-ray fluoroscopy (a Philip mono-rotatable C arm X-ray equipment) as image guide with routine method reported by american college of cardiology cardiovascular technology assessment committee. TTE guiding CSC in site: The guide wire was inserted into left subclavicular vein and inferior vena cava and it was displayed clearly by TTE. The sheath could be displayed clearly too by TTE. CSC was put through the sheath into right atrium in prone position and was thoroughly showed by TTE via untypical parasternal four-chamber view.

本研究对60例心内电生理检查患者，应用TTE作为影像学引导的可行性和临床应用的方法学进行了探讨，并对5只犬TEE引导射频导管消融术时大头电极导管到位的可行性进行了动物实验研究，具体为：(1)专用冠状窦电极导管置放时TTE引导的可行研究；(2)普通电极导管置放时TTE引导的可行研究；(3)专用冠状窦电极导管和普通冠状窦电极导管置放时TTE的对比研究：(4)TTE引导His束电极导管和右室电极导管到位的临床应用研究；(5)TTE在心内电生理检查中的应用研究；(6)TEE引导射频导管消融术大头电极导管到位的实验研究。

Ray width 1-4 cells; Body ray cells procumbent with 1-9 rows of upright and/or square marginal cells.

射线宽1-4细胞；多列射线的中部多为横卧细胞，边缘有1-9行直立和/或方形细胞。

Ray width 1-4 cells; Body ray cells procumbent with 1-4 rows of upright and/or square marginal cells.

射线多列和单列射线组成，两种大小，1-4细胞宽。

The algorithm is applied in the segmentation of Magnetic Resonance Imaging of human brain for the 3D reconstruction on dependent of different human tissue structures, in which the problem on wraps between different tissues and fuzzy edges between the different regions in medical volume data may better be settled, which can not be well done by the typical"hard"segmentation using binary logical representation.(3) An accelerated algorithm of volume rendering with X-ray perspective and Phong shading effect based on textures mapping and blending is presented for realizing 3D reconstruction of medical volume data by 2D texture mapping and blending, in which the accelerated algorithm of window transformation is utilized to computing voxels' gray scales and opacities to produce X-ray perspective images, and Phone illumination model is used to import world light sources and an unit spherical surface under the same shading environment as the actual volume rendering is employed to simulate the real reflectional light of per-voxel so that 3D reconstruction possesses illumination effect in the world. Furthermore, 3D matrix transformations of degree rotation and other operations of 3D object are studied, and a fast equivalent method of corresponding shading correction is brought forward to improve its interaction speed in volume rendering process.

该方法利用体数据的窗口变换加速算法将医学体数据转换为计算机显示值，可以得到具有X光透视效果三维图像；该方法提出的Phong明暗处理加速算法利用Phong光照模型引入外部光源，使用一单位球面体来仿真体数据的法线矢量集所产生的反射光强，以快速得到每一个体素的反射光强度，使物体的三维重建达到现实世界中人眼直接观察的逼真效果；此外，还研究了三维重建物体的三维旋转等矩阵变换，提出了一种Phong明暗修正的快速算法来保证了体绘制中三维几何变换的多视角观察的交互速度。

Normal term newborns were examined as control. In 34 cases, there were no retrohepatic hyperechogenicity and the X-ray showed normal. In other 6 cases the sonographic pattern was discrete linear echoes, and X-ray showed wet lung.

而40例正常新生儿，有34例在肝脾后未见任何回声， X线胸片提示心肺正常； 6例显示在肝脾后可见稀疏的中等回声， X线胸片提示湿肺。

It's bell can reach over a meter in diameter.

它的身体最大可以达到直径1米多。

Now they are overdue and I shall have to pay a fine.

现在他们过期了，我不得不付罚款。