几何基础

In the second part of this thesis, the physical model, which used to describe the evolution of highly charged ions in the EBIT and provided by Penetrate, are discussed in detail. Based on this model, we have some modifications. The modified physical model takes the effect of the geometry of drift tube, the cumulation of space charge, and ionization heating into account.

在论文第二部分，我们详细讨论了Penetrate所提出的用来描述高价态离子在电子束离子阱中演化的物理模型，并在Penetrate所提出的物理模型基础上做了部分修正，修正后的物理模型考虑了漂移管的几何位形、电离加热以及电子束的空间电荷累积的影直流电弧等离子体发生器的数值模拟及电子束离子阱物理研究响，利用修正后的物理模型，对高价态离子在EBI下中演化过程进行详细地数值模拟。

The foundation of these work is the analysis on the boundaries of domains, namely, CR geometry and analysis.

这些工作的基础是域的边界上的分析理论，即CR几何和分析。

Based on these constraints for distance geometric computation, the structure of Blue Crab MT whose conformation has been measured by NMR was predicted.

以上述结构特征为基础，构建了用于结构计算的约束条件，建立了一种基于距离几何算法的蛋白质结构预测方法。

And from this variational principle,it can derive the corresponding boundary value problem governing nonlinearly static analysis of Timoshenko beams.

在假定梁不可伸长的基础上，给出了描述几何非线性、物理线性的大挠度Timoshenko梁的变分原理，由此导出了大挠度Timoshenko梁平面静动力学分析的边值问题。

Later, Riemann generalized Gauss's theory on surfaces to higher dimensional spaces (called "manifolds") and established Riemannian geometry which constitutes the foundation of Einstein's General Relativity theory.

Riemann将Gauss的理论推广到高维空间而创立了Riemann几何并为Einstein的广义相对论奠定了基础。

This paper proposes a new mathematic method for modeling structural geometry woven fabrics based on Peirce's model.

以peirce模型为基础进一步提出了建立机织织物结构几何模型的数学方法。

In his discussion of form,Le Corbusier is at pains to point out that the geometric laws of any particular form should be the basis for subsequent action.

在关于形式的讨论中，柯布西耶设法指出所有特殊形式的几何规律是后来进一步行动的基础。

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。