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- Three iterative algorithms, ART、MAP and OSEM, are attempted to reconstruct the section of steel tube by using the simulation model. 为了加快钢管检测的速度，本文研究了少投影条件下钢管截面的图像重建算法并通过模拟数据验证了其重建的效果。
- section of steel tube 钢管截面形式
- The results of simulation experiment indicate that ART、MAP and OSEM can reconstruct accurate section images of steel tube from less than 20 projections and approximate images from 10 projections. 模拟试验的结果表明，ART、MAP和OSEM算法可以实现少于20组投影数据下钢管截面较为精确的重建，并且可以做到10组投影下的近似截面重建。
- The Extension consists of a length of steel tube with a coupling on the other end to attach to a handwheel or some other type of operating device. 阀杆加长部件由钢管长度和末端连接装置构成,其中一个末端连接阀门,另一端连接手轮或其他类型的操作装置。
- Suitable for long and thin materials of steel tube, steel bar, steel plate and steel drum. 适用于管材,圆钢,板材,园盘等长大物料储存。
- Bring forward two ways to compute the center line of steel tube and analyze thein respectie application. 提出管塔制作中钢管中心线的两种计算方法,并分析它们的适用情况。
- The calculation of steel tube s thickness is an important problem in the design of the high-pressure pipage. 高压输送管路中管壁厚的计算和确定是高压管路设计中的一个十分重要的问题。
- He has lived one section of miserable life. 他过了一段悲惨的生活。
- As the increasing of the dimension of CFT column, thickness of steel tube and yield moment decrease. 随着轴压比的增加，钢管壁厚度增加，柱延性系数增加；随着截面尺寸增加，钢管壁厚度减小，屈服弯矩也减小。
- Signals control each section of the railway track. 各种信号控制着铁路轨道的每个部分。
- Main Features: color of steel tube: bright black. Color is homogeneously distributed on the tube surface. The tube has good property of antirust. 主要特点：钢管颜色：黑中带亮，钢管表面颜色均匀度高，一致性强，外表较为美观，钢管防锈性能好。
- Based on the development rule of transverse strain of external steel tube, the hooping effect of steel tube on core concrete was discussed. 基于外侧方钢管的横向变形的发展规律，探讨外围钢管对核心混凝土的套箍作用。
- First the surgeon performed the section of the blood vessel. 外科医生首先切开血管。
- It's a bridge of steel framework. 那是座钢铁结构的桥梁。
- He lived in a quiet section of uptown. 他住在住宅区的一个安静的地段。
- Relevant investigation of elements responsible for the inaccuracy of steel tube ten sile test was made and countermeasures were proposed accordingly. 分析了钢管拉伸试验中影响试验准确度的因素，提出了解决的措施。
- He occupied the other section of Martin's house. 他占用了马丁房子的另一部分。
- Experiments on CFST arch and hybrid arch of steel tube and CFST under unsymmetrical two concentrically in-plane loads were carried out. 对钢管混凝土拱和钢管-钢管混凝土复合拱进行面内两点非对称加载试验。
- A cargo of steel was lost at sea. 有一货轮的钢材在海上遗失了。
- The price of steel jump sharply last year. 去年钢材价格急剧上涨。
