查询词典 unstable solution

A nonlinear evolution equation for the radiation field in magnetically insulated transmission line oscillator is derived and the threshold conditions of the nonlinear unstable solution are studied.

导出了磁绝缘传输线振荡器中辐射场的非线性演化方程，并讨论了在临界值点附近可能出现非线性不稳定解的条件。

Because the full length DFF45 recombinant protein was unstable in the solution, it means that either the DFF45 protein has uncompacted region in the structure or the protein has several domains.

由于细菌表达的全长DFF45重组蛋白表现出不稳定易降解的特点，说明该蛋白可能具有无固定结构的区域，或者含有多个结构域。

The method is called apparent density inversion. The inversion technique overcomes drawbacks of long computation and unstable solution, it takes less than 20 seconds to compute a density data set of 128 ×128×10 points on a PC of 1.99 GHz. The method is demonstrated on synthetic models and on real gravity data

本反演方法克服了传统已有方法计算时间特别长、解稳定性差的缺点，在主频1.99 GHz的微机上，反演128×128×10个密度值的计算时间小于20 s，理论模型和实际资料的应用表明反演具有较好的效果。

The results of weight-loss tests of many magnesium alloys containing different concentration Al and Rare earth elements showed that the effect by only adding aluminum to improve the corrosion resistance of magnesium alloys in sodium chloride solution was unstable.

不同铝和稀土元素含量的镁合金的失重实验结果发现铝元素对于改善镁合金在NaCl溶液中耐腐蚀性能的作用是不稳定的。

The B spline and the NURBS spline functions commonly used in the electromagnetic scattering field are approximate splines, but they have to solve the control points and the numerical solution is unstable sometimes.

目前电磁散射几何建模常用的B样条和NUBRS曲面都是逼近样条，存在需要反求控制顶点，数值解有时不稳定的缺点。

Through such a study, it is also shown that when the time delay is long enough such that the stability switches of the equilibrium of system halt, the bifurcation branches originated from the critical time delays cannot be surely stable or unstable in the whole solution space, that is, their stability depends on cases.

利用打靶法的数值结果说明了当系统平衡点不再发生稳定性切换时，源自这些临界时滞处的解支的稳定性在整个解空间的稳定性具有不可判定性，这也说明由多尺度法所得高阶近似判定的解支的稳定性事实上只表示解支在局部中心流形上的稳定性，而非在整个解空间中的稳定性。

Furthermore, the light and heat stability of carminic acid was studied, and the results showed that carminic acid was stable under the darkness and the scattered rays of indoor, but it was unstable in the sunshine and the incandescent lamp, its aqueous solution was stable even at lower than 90

此外，对胭脂红酸的热、光稳定性进行研究的结果表明：胭脂红酸在遮光和室内散射光的情况下是稳定的，在白炽灯下不稳定，在阳光下极不稳定；在90℃以下胭脂红酸溶液是稳定的。

Porosity evolution influenced by those diageneses is also analyzed. The dissolution and alteration of feldspars and unstable rock fragments are the main constructive diageneses, but the compaction, pressure solution and cementation are the main destructive diageneses which are unavoidable.

溶蚀作用与蚀变作用是形成砂岩储层的两大建设性成岩作用，云母类矿物的水解作用对孔隙的形成也起到一定的积极作用；但机械压实、压溶作用和胶结作用则是储层形成过程中不可避免的破坏性成岩作用。

School of Ocean and Earth Science, Tongji University, Shanghai 210092, ChinaAbstract Sand dunes and gobies are easily seen and the near surface geological condition is very complex in Rubal-Khali basin, Saudi Arabia. Because of this, the horizontal velocity is quite unstable, making the static correction a hard problem. The original near surface model can not obtain a satisfactory solution for the statics problem due to the limited uphole survey and poor exploration status.

沙特阿拉伯鲁卜哈利盆地B区块地表多为沙丘、戈壁，近地表地质条件复杂，横向速度变化大，静校正问题严重。B区块勘探程度低，微测井数量少，原有的近地表模型不能很好地解决资料处理中的静校正问题，给最终的处理结果带来影响。

For the unstable state flow of single phase fluid, the finite element method is compared with analytical solution for one-dimensional plane flow.

为使模拟计算更加接近实际情况，将油水井作为油藏的内边界处理，建立各向异性油藏单相流体渗流问题的有限元方程。

Go to your desktop and right click in a blank space.

请到您的桌面，然后右击一个空白。

Tara appears in Buddhism, Jainism, and particularly, Tibetan Lamaism, as a complex array of manifestations: goddess of ascetism and mysticism, mother creator, protectress of all humans as they cross the sea of life.

度母出现在佛教，耆那教里面，尤其是西藏的喇嘛教，作为一系列的陈列阵容；神秘的女神，创世之母，人类横过生命之海洋的女性保护者。