用坐标反算ab方向的坐标方位角。
改进了反算nurbs节点矢量的计算方法。
The calculation method of reverse NURBS node vector is improved.
并且由例证可见，反算的算法收敛稳定，计算效率高。
Moreover, in the case of the inverse calculation, it was shown that the stable and efficient convergences were obtained.
推导了由裂缝控制限值反算地下连续墙弯矩的计算方法。
An equation to calculate concrete diaphragm walls bending moment is deduced based on the crack control limit value.
所以，按反算办法，对计算竖向地震力的某些参数提出初步建议。
Therefore, a method of inversion for calculating certain parameters of the vertical earthquake force is here suggested.
该方法给出了滑坡破坏加速度判据并能够精确反算滑动面力学参数。
This method presented the criteria for the acceleration of failure by slope-sliding and was able to do inverse computation of parameters of mechanics on slide surface.
在地图等积投影中，椭球面梯形面积的正、反算方法和精度是关键。
In order to satisfy the requirement of high precision in map equiareal projection, the precise forward and inversion formulas of ellipsoid trapezoid area are studied out according to the basic theory.
该方法给出了滑坡破坏加速度判据并能够精确反算滑动面力学参数。
This method presented the criteria for the acceleration of failure by slope-sliding a…
基于惰性点理论，提出了一种新的模量反算判别方法，并给出了判别标准。
Based on theory of inertial point, a new assessment method of back calculation of modulus is put forward with the assessment criterion provided.
导出了自行查找关联线元的方法，并侧重研究了点对缓和曲线反算问题的算法。
The process of finding the relative point is studied, with an emphasis on the algorithm of inverse point to transition curve .
综合考虑以上因素的试验路模量反算结果表明：级配碎石的强度有大幅度提高。
Results indicate that the modulus can be improved largely by using above three methods in the design and construction of graded broken stone base.
最后通过试验土钉抗拔力反算土体与锚固体的极限粘结强度，并与规范推荐值进行了比较。
Finally, the limit cohesion strength between the soil and the nail was obtained by in-situ test, and the results were also compared with those regulated by the technical specification.
根据某旧水泥混凝土路面改建时的FWD检测数据，研究了旧层状体系路面的评价方法及模量反算。
The back calculation of pavement layer moduli and the method of estimate is researched according to the measured FWD data from the field test of the existing cement concrete pavement road.
文中根据曲线曲面型值点，分别用四种参数化方法构造节点矢量，利用NURBS方法反算控制点。
In this paper, the control points are calculated based on the curve or surface's data points and the knot vector which is calculated with four kinds of parameterization by the method of NURBS.
建议根据滑坡的特性及所处的阶段，采用不同的试验，结合试验结果、反算分析和经验数据综合确定。
Propose and according to characteristic and stage of landslide, adopt different tests, combine the result of the test, inverse analysis and experience data to fix synthetically.
对于短时间内的剧烈放气过程，是根据放气后的抽气试验数据拟合出抽气曲线，以此反算放气量的大小。
For an acute outgassing course in a short time, a fitting curve is obtained according to the pumping data after outgassing, so the outgassing amount is obtained from the curve.
既可反算路面结构层的模量，又能反算其厚度。 通过与实际值比较，其计算精度完全满足工程实际的要求。
More important thing is that the method can back calculate both modulus and thickness of flexible pavement structure layers simultaneously.
现有的反算理论大多建立在弹性层状体系和拟静力分析方法的基础之上，忽略了路面材料应力应变非线性特性。
Most back-calculation theories are based on the linear elastic layer system and quietude analysis method, which neglected the nonlinear peculiarity of the pavement material.
采用轴对称动力有限元结合系统识别反分析理论进行路面模量反算，考虑了落锤式弯沉仪（FWD）荷载作用下的路面反应动力效应。
This essay adopts limited units of axial symmetry and theory of system recognizing backcalculation, in which the dynamic effect of the road surface reaction to load of FWD is considered.
借助于SU(1,1)代数，将三维谐振子与加反平方势的三维氢原子表示成具有相同形式的两算符下的本征值方程。
In terms of SU (1, 1) algebra, the eigen equations of three-dimensional Harmonic Oscillator and hydrogen atom in inverse square potential are counterchanged the same equations in form.
采用分段线性插值法，给出了由形状观测离散值反求密度分布的计算方法，并给出了算例。
A calculation strategy for the recovery of density distribution by the shape observations is presented and proved by piecewise linear interpolation method.
通过实际工程算例，给出了反分析的计算过程。
The calculating process of this method was gave by analysis the project instances.
JUNO或RENO-50实验中地球物质效应对反应堆反中微子振荡的影响：多小才算小？
Terrestrial matter effects on reactor antineutrino oscillations at JUNO or RENO-50: how small is small?
算例结果表明，本文中所使用的反求方法的原理是正确的，方案是可行的，符合实际工程的需要，能迅速获取相关参数。
Numerical results show that the method of inverse principle is correct, scheme is feasible, according with the actual needs of the project, which can quickly get the relevant parameters.
通过对两个算例的分析可看到改进算法的效果以及粒子群算法解决分布式电源并网情况下反时限过流保护整定问题的能力。
The improved PSO algorithm is tested in two models, to show the effects of improvement and its ability in solving the inverse time overcurrent relay coordination problem when DG units are connected.
通过对两个算例的分析可看到改进算法的效果以及粒子群算法解决分布式电源并网情况下反时限过流保护整定问题的能力。
The improved PSO algorithm is tested in two models, to show the effects of improvement and its ability in solving the inverse time overcurrent relay coordination problem when DG units are connected.
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