唯一解

Some sufficient conditions for existence and uniqueness of periodic solution to Duffing equation are obtained using trigonometrical series and contraction mapping.

利用三角级数理论及压缩映射原理，研究时滞Duffing型微分方程，给出此类方程存在唯一周期解的几个充分条件。

In the second section, the sufficient conditions of the global asymptotic stability and uniqueness of periodic solutions are obtained for n-dimensional model.

第二节讨论了均有HolingⅡ型功能反应且具有周期系数的顺环模型，得到了该系统存在唯一全局渐近稳定周期解的充分条件。

Based on the Goel-Okumoto NHPP SRGM and S-shaped SRGM respectively, a software release problem is studied.

并就参数估算时非线性方程组线性相关，导致参数解不唯一的问题，给出了优化求解的方法。

Finally, to get the exclusive solution of a certain structure, the realization technology of electric and magnetic boundary conditions, as well as the quasi-periodic boundary condition is studied.

最后，对确定的高频结构，为了得到唯一确定的电磁场解，对基于有限积分理论的电边界、磁边界以及周期结构的准周期边界的数值实现技术进行了研究。

Like the case of the VTI, only the nonhyperbolic traveltime data of the P-wave are not sufficient to retrieve the three parameters V_(p0),εandδ, suggesting that the inversion can be performed by using multiazimuth nonhyperbolic (long-spread) P-wave reflection traveltime data, and vertical velocity from check shot and drill or log well data.

对于VTI介质，P波反射由V_(p0)、ε和δ三个参数来描述，在其它资料给出垂直速度V_(p0的前提条件下，ε和δ两个参数可由近偏移距NMO速度和远偏移距四次时差系数(A_4)两个条件来约束反演，那么反演解是唯一的。

And the method could also be applied to determine the parameters of other rheological model.

但是这些方法的解并不唯一，所求参数不一定是模型参数，给计算结果带来了误差。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。