查询词典 higher algebra

For a monotone twist map the well-known Birkhoff fixed point theoremsays that the circles with rational rotation number will break up whence a finitenumber of pairs of periodic points arise,half of which are elliptic and the othershyperbolic.Moreover,around each elliptic periodic point a few of new invariantcurves will appear and make a picture of phase space with a self-similar structure.Again one may ask is there a similar picture for higher dimensional Hamiltoniansystems?

对于单调扭转映射，著名的Birkhoff不动点定理指出，在通有情况下旋转数为有理数的不变曲线一般会破裂，在原来的不变曲线附近会产生有限多对周期点，其中一半是双曲的，一半是椭圆的，而在椭圆型周期点的周围又会产生一圈圈的不变曲线，使得椭圆周期点附近的动力学行为和整个相空间的动力学行为十分相象，换句话说，整个相空间具有无限嵌套的自相似结构，自然又产生了一个问题：对于自由度数目大于2的高维哈密顿系统，其相空间是否有类似的图象？

A new key distribution scheme based on the elliptic curve cryptc,system was developed to solve the lower efficiency and higher resource occupation problems of the existing key distribution schemes.

为了解决现有密钥分配协议所存在的工作效率偏低和资源占用率偏高等问题，提出了一种基于椭圆曲线密码体制的高效安全密钥分配协议。

The zero-knowledge status authentication is a fascinating question of contemporary password research, and the elliptic curve is the cipher system having higher security in comparison with others.

零知识身份认证是当代密码研究的一个引人入胜的问题，而椭圆曲线相对于其它密码体制具有更高安全性。

Under the temperature of 15℃ nearby, the light compensation point of the Elodea nuttallii is higher,so it is suitable for living in the upper water,the pollution of water has a greater impact on it.

在15℃左右时，伊乐藻的光补偿点相对较高，适宜生活于水体的上层，水体污染对其影响较大。

To transplant Elodea nuttallii,Potamogeton crispu in winter when water level is lower and its transparence is higher than other season is an effective way to establish pioneer submersed plant community.

利用冬季水位低、透明度相对高的时机种植伊乐藻、菹草等这些适合冬春季生长的沉水植物是建立沉水植物先锋群落的一个有效途径。

The results showed that Jussiaea stipulacea Ohwi and Eichhornia crassipes had higher values of V and K than Elodea nuttallii, illuminated that the two floating macrophytes were proper for pre-treatment of the seriously polluted water.

结果表明：漂浮植物黄花水龙和凤眼莲具有较大的吸收速率V和K值，因此，它们更适合作为先锋植物对污染严重的富营养化水体进行前期的修复治理，待水体水质提高到一定的程度时，再利用去污能力低的沉水植物进行对修复水体水质的维持和提高，并在此基础上可逐步建立一个较为稳定的、生物多样性的生态系统。

That's not to say you can't shoot for a higher return elsewhere.

这并不是说你没法寻求更高的回报。

Your price is higher than those we got from elsewhere.

你们的价格比我们从

On the basis of analysis of globalization and this new emerging situation, this thesis proposes some reform and suggestion to the problems existing in the ELT in higher education.

针对这一形势，本文在对全球化趋势分析的基础上，结合高校英语教育现时存在的问题，提出了一些改革的方法与建议。

The adsorbed DCPC on the carbon was eluted with 8%ethanol aqueous solution,and the obtained eluate contained DCPC in a yield of 60%～65% with a purity higher than 85%.

以8%乙醇水溶液洗脱，得到DCPC纯度大于85％的洗脱液，收率为60%～65%。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"