椭圆的

Similarities in morphology, element ingredient and element content between otoliths in the lagena and those in the utricule suggest that the two types of otolithic organs may play a similar role in sensing gravitational and acceleration signals.

信鸽瓶状囊的耳石与椭圆囊的耳石在形态、元素组成及含量水平上具有相似性，提示这两种耳石器官可能在感受重力和加速度信号中起相似的作用。

The optimization result shows that the maximal attack area is an ellipse of 17 km half long axis and 10 km half short axis, and it is better than the conclusion of a lot of simulation researches aiming at this warhead, and it can offer reference for further design of reentry trajectory.

优化结果表明，最大可攻击区范围是一个长半轴为17 km，短半轴为10 km的椭圆区域，此结果优于针对该弹头进行的大量弹道仿真所得的结论，可为进一步弹道设计提供参考依据。

Based on the analogy of structural mechanics and optimal contro1, and a1so based on carrying the minimum potential energy variational principle in elastici- ty to the generalized one, the theory of Hami1tonian system can be introduced into theory of e1asticity and e11iptic PDE. The transverse eigensolutions of the Hamiltonian operator matrix and its expansion solution method can be deduced.

利用结构力学与最优控制相模拟的理论，将弹性力学势能变分原理导向部分一般变分原理，并将哈密尔顿体系的理论引入到弹性力学与椭圆型偏微分方程之中，导出一套横向哈密尔顿算子矩阵的本征函数向量展开解法。

His window is closer to us, and we have a good view of whether he's doing his morning exercises on his elliptical machine, or not.

因为他的窗户和我们的比较靠近，我们能清楚地看到是否在椭圆型的机器上做清晨锻炼。

In this paper, hyperbolic tangent function method and its some extensions suchas sine-cosine method, extended tanh method, F-expansion method and Jacobi ellip-tic function method are summarized, the idea and technique of hyperbolic functionmethod are explored.

本文对双曲正切函数法及sine - cosine方法，扩展tanh函数法，Jacobi椭圆函数展开法， F-展开法等一些主要的双曲函数方法及其扩展进行了系统的归纳与总结，揭示了双曲函数法的构造思想与技巧。

The paper,combined with public-key certificate technology, designs a new data encryption scheme based on Hyperelliptic curve.

本文在超椭圆曲线上，结合公钥证书技术设计了一个新的数据加密方案，该方案具有安全性高，加密和签名速度快，通信量少等优点，特别适合用于解决用户群是一些计算能力和存储能力受限的系统中的安全问题。

We also obtain the normal forms for a class of real analytic hypersurface in C^2, and the existence and uniqueness of the positive solutions of some quasilinear elliptic equations.

我们还研究了一类C^2上的实解析超曲面的规范型，以及一些拟线性椭圆型方程组正解的存在性和唯一性。

Location of the planetary nebulae in the outskirts of the giant galaxy Messier 87 and in the intergalactic space around the centre of the Virgo Cluster of galaxies.

图中标出了位于巨椭圆星系M87外晕远处的和位于室女座星系团中心的星系间空间中的行星状星云。

In chapter one, some introductive materials are presented, including the motivations and the developments of the elliptic curve cryptosystems, the inten- tions of the research work, the main contents of the paper and the list of the results obtained by the author.

其中，第一章概括地介绍了椭圆曲线密码研究的背景、意义、现状和本文的主要研究内容及作者的主要研究结果等。

Dual mode predictive control method is proposed for reducing on-line burden. The proposed method applies the ellipsoid invariant set to the terminal set.

该方法将时滞系统的不变椭圆集应用于预测控制的终端约束集，保证了输入受限系统的可行性和稳定性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。