结果表明，椎体后高、椎体上矢径呈正异速生长。
The results show that posterior height of vertebral body and Upper antero-posterior diameter of vertebral body are positive allometry.
每个立体的矢径总是正值长度。
The radius vector of each solid is always a positive length.
结果表明，椎体后高、椎体上矢径、全宽呈正异速生长；
The results show that posterior height of vertebral body, Upper antero-posterior diameter of vertebral body and total breadth, all are positive allometry;
本文运用简单的数学方法推导出惯性系矢径方程的另一种坐标和时间变换式。
With the help of the simple mathematical method, another transformation formula of coordinates and time between the radius vector equations in inertial frames is derived in the paper.
各年龄组椎管矢径无明显差异；L4-S1节段15岁以上各组椎管横径大于以下两组（P<0.05）；
SD of all groups was not obvious different in L4-S1 segments, TD of every groups above 15 years old was larger than that of two groups below(P<0.05);
前后径在轴位和正中矢状位上呈现相似的变化趋势。
AP dural sac diameter on axial and midsagittal images showed a similar tendency.
在正中矢状位图像上测量了L1和S1水平的硬脊膜囊的前后径和上终板角。
On midsagittal images, AP dural sac diameter and the upper-endplate angles of L1 and S1 were measured.
并以此为基础，就极限跨径下拱桥的最佳矢跨比范围进行讨论。
Onthis foundation, the best range of rise-span ratio of arch bridge which reachesits limitation span is discussed.
观察测量矢状面T1加权图像上垂体腺的形态、高径、垂体柄宽径及后叶信号特征。
The shape, height of the pituitary gland, the width of pituitary stalk and the characteristic posterior lobe signals were measured and observed on sagittal T1WI.
影像学检查：椎管矢状径增加，椎管横截面面积明显扩大，脊髓膨隆良好。
Radiologic Results:sagittal diameter of vertebral canal and trans. sec. area increased and spinal cord were well than preoperative status.
X线片测量椎管矢状径、Povlov比值、动态狭窄参数等指标；
The saggital diameter of spinal canal, Povlov ratio and dynamic spinal stenosis parameter were measured on X-ray.
X线片测量椎管矢状径、Povlov比值、动态狭窄参数等指标；
The saggital diameter of spinal canal, Povlov ratio and dynamic spinal stenosis parameter were measured on X-ray.
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