On this model basis the first step method is used for optimization of the arch axis coefficient of the arch bridge.
在此模型基础上，使用一阶方法对拱桥的拱轴系数进行优化。
According to measuring the coordinates of each span of long span double arched bridge, the arch axis for every span is determined.
通过测量拱腹各点坐标来确定双曲拱桥每孔的拱轴线。
West to east in accordance with building layout in order to worship hall, bunker building, the arch axis, with rooms on both sides of the North and the South.
建筑布局依西向东，以礼拜大殿、邦克楼、牌坊为轴线，南北两侧配有厢房。
In connection with its self properties, we make an inquiry into the major parameters, such as ratio of height and span, equation of arch axis, geometry size of section and so on.
针对该桥自身的特点，对拱肋矢跨比，轴线方程，截面的几何尺寸等主要技术参数做了探讨。
To resolve the problem of the point and direction of the fixation of Axis lateral arch screw, using navigator finds the safe trajectory.
针对枢椎侧方椎弓螺钉固定时确定进针点和进针方向困难的问题，通过导航仪寻找安全钉道。
Result the parameters of posterior arch, lateral mass, vertebral artery groove, axis length of screw pass via posterior arch and lateral mass, projection and direction of screw were measured.
结果测量出寰椎后弓、侧块、椎动脉沟、后弓侧块螺钉通道的轴线长度，及后弓进钉点和进钉方向等参数。
The axis of thin shell arch is selected coincidence with the pressure line, the stress inside the arch is controled by pressure stress.
选择薄壳拱的轴线与压力线相吻合，拱内应力主要由压应力控制。
Calculation of the arch-axis coefficient is important in arch bridge design.
计算拱轴系数是拱桥设计的重要组成部分。
Objective to develop an improved adjustable bilateral aiming device to substitute the old single-side one to guide lateral arch screw insertion of axis.
目的针对单侧可调式枢椎椎弓螺钉定位器的不足，研制改进出一种双侧可调式侧方椎弓定位器。
Objective to develop an improved adjustable bilateral aiming device to substitute the old single-side one to guide lateral arch screw insertion of axis.
目的针对单侧可调式枢椎椎弓螺钉定位器的不足，研制改进出一种双侧可调式侧方椎弓定位器。
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