形成层细胞阶段和伸展生长阶段，POD主要分布在径壁上，尤其是细胞壁角隅处和初生纹孔场附近的细胞壁。
POD was mainly distributed in the radial walls of the cambial cells and expanding xylem cell, especially at the corner of cell wall and cell wall close to the primary pit field.
根据检测得到的正常人和动脉硬化性脑血管病患者的颈动脉血流速度、血管管径等数据，计算两者的颈动脉壁面切应力。
According the blood speed and diameter of carotid artery measured in cerebrovascular disease patients and the control, the carotid wall shear stress of both groups are calculated.
设计了加工轨迹，通过实验研究，对成形路径，尤其是第一道次进行了优化，在此基础上加工获得了高径比为0.5的直壁筒形工件。
The vertical wall cylinder part with 0.5 height-diameter ratio can ultimately be formed in the practical manufacture after the forming track, especially the first optimal forming path.
壁厚局部变薄量可以近似表示为扩径率的线性函数。
The local thinning of wall-thickness can be described by linear function of expanding-ratio.
并分析了缩径率、缩径凹模半锥角、摩擦系数、缩径管坯初始壁厚对管端翘曲和轴向伸长率的影响规律。
In addition, this paper presents how the diameter reducing rate, the die semicone angle, the friction coefficient and the original wall thickness influence the buckling and the axial elongation rate.
结论：电学隔离肺静脉治疗AF是可行的，形成确切的连续透壁肺静脉损伤可简化消融治疗AF的径线。
Conclusion: Pulmonary veins isolation is an feasible treatment for AF. Ablation linear for the treatment of AF can be simplified if continuous and transmural lesion were produced.
钢管在减径过程中，减径量一定时，影响其增壁量的主要因素是钢管的轧制温度和张力系数等。
During the process of reducing, in case of constant diameter reduction, the major elements responsible for tube wall increase are the rolling temperature and the stretch factor, etc.
轨道的取向与单壁碳纳米管的管径和曲率有密切的关系。
Studies show that orbital orientations are related to the curvature and diameter of single-wall carbon nanotubes.
提出了一种近似超塑变形的扩径推弯成型方法，并成功地用于厚壁不锈钢弯头的生产。
A new process of such kind similar to superplastic deformation was proposed and hen put into production of heavy-wall stainless steel elbow successfully.
真空定径冷却，确保产品的精确圆度，壁厚均匀。
Vacuum calibration tank can be assures the accurate round and even capacity.
输入管径，壁厚，管道材料，以及PT 500计算出最佳的安装方法，传感器和分离的距离。
Enter the pipe diameter, wall thickness and pipe material, and the PT500 calculates the optimum mounting method and separation distance for the sensors.
而与模具工作表面相接触的管坯，其变形则较为均匀，材料壁厚减薄较小，达到扩径整形的目的。
However, the deformation is more uniform with regard to billet in contact with the work surface of punch, material thickness decreases less, therefore, the purpose of calibration has been reached.
结果表明小麦茎秆强度与厚径比、壁厚均呈极显著正相关，与髓腔直径呈极显著负相关。
The thickness-diameter ratio of culm, stem diameter, culm wall thickness and pith diameter were significantly correlated with stem strength.
分析了材料的动态自增强能力，考察了径比对厚壁圆筒形构件动态自增强效果的影响。
The dynamic autofrettage ability of materials is analyzed. The influence of the diameter ratio of thick-walled-cylinder components on the…
结果：①空肠和回肠前后长人壁动脉入肌点位置和管径均不同；
Results: (1)Both the entering points and the diameters of the anterior and posterior long entering arteries are different between jejunum and ileum;
涡轮发动机（10）还包括沿着通过中空环形壁的第一方向的第一流径。
The turbine engine (10) also includes first flow path (72) in a first direction through the hollow annular wall.
涡轮发动机（10）还包括沿着通过中空环形壁的第一方向的第一流径。
The turbine engine (10) also includes first flow path (72) in a first direction through the hollow annular wall.
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