可构造的

We present two methods for generating a segment of circular arc by the vector valued continued fractions. Based on this method we construct a parametric rational arc spline that is GC〓 continuity. By adjusting the given tangent vector, this parametric rational arc spline also has convexity preserving property and monotonicity preserving property.

本文利用向量连分式给出了两种快速生成圆弧的新方法；在此基础上，本文还构造了一种GC〓连续的可调参数有理圆弧样条，在实际操作中，通过调整一侧端点的切向量，可使上述圆弧样条曲线保凸，保单调。

Based on the viewpoint of set and denseness,this paper discusses some characteristics of the of continuity set and differentiable function set,and the structure of differentiable function sets,and demonstrates that there does not exist a continuous functional sequence {fn} which is convergent to Dirichlet function.

从集合观点和稠密性出发，讨论了连续函数和可导点集的一些特性及可导函数点集的构造，并证明了R上不存在收敛于Dirichlet函数的连续函数列{fn

Index system of water resources sustainable utilization was designed in this research based on the renewability of water resources and index system of water resources renew ability.

从水资源可再生性出发，在构造水资源可再生能力指标体系的基础上，建立了包括水资源可再生能力指标体系、生态环境用水优先的水资源开发阈值评价指标体系和水资源可再生性维持即可持续利用指标体系3个层次及单位面积水资源量等14个评价指标的水资源持续利用指标体系。

We have done following work in the paper: By the method of adiabatic theorem, this paper studies the semiclassical quantization of a chaotic state for a coupled system.

本论文就已有的Henon-Heils系统构造了一个新的近可积系统，发现这个近可积系统适合于做量子能级与经典能级的直接对照。

Based on the surjection of maximal monotone operators, we prove that some semilinear heat equations with weak Lipschitz nonlinear terms are exactly controllable by L〓 0, T: H〓(Ω control; Based on the critical point theorem of coercive convex functionals, we prove that some parabolic equations with Lipschitz nonlinear terms are globally approximately controllable and finite-dimensional exactly controllable by controls acting on mobile supports, and finally, we extend the results to parabolic equations in R〓.

首先利用极大单调算子的满射原理证明了半线性热方程在较弱Lipschitz条件下可通过L〓0.T；H〓(Ω控制实现精确能控。然后通过构造强制凸泛函并利用其临界点理论证明了带Lipschitz非线性项的抛物型方程可通过作用在在移动支集上的控制来实现整体近似能控与有限维精确能控，最后将整体近似能控与有限维精确能控结论推广到无界区域R〓上。

In this paper,suitable approaches and measures for the robustness,repairability, examinability and waterproofing performance of bridges are discussed to ensure the durability of concrete bridges.

本文从桥梁的整体性、可修性、可检性、防水性能等角度探讨了如何在结构设计和构造细节方面采取合适的原则和措施，以便有效地保证桥梁的耐久性能。

However, in the absent of LEF-2, the formation of viral nucleocapsid derived from lef-2 ko bacmid appeared to be normal under transmission electron microscope, suggesting that the life cycle of lef-2 ko bacmid could proceed through DNA replication to viral pakckaging unimpededly.

虽然病毒之复制受到lef-2基因缺失的影响，但由於病毒之构造蛋白仍可表现，如鞘蛋白(VP39)等，因此经由穿透式电子显微镜观察，可知缺失lef-2之病毒仍可有正常的核酸蛋白鞘形成。

This paper combining with drilled data of coal mine, design the application of mixed data modelling system which is fit for the mining geology spatial data to be expressed. Provide the idea that the general process of geological modelling and the visualization processes of typical construction.

本文结合煤矿钻探数据，设计了适用于地质矿山三维可视化空间数据表示的混合数据模型系统，研究了地质体三维可视化建模的一般流程和典型构造建模的处理方法。

The Zhouzishan part of is charactered by thrust nappe which is composed by faults thrust from west to east, anticlines and synclines, involving much of Proterzoic, Palozoic and very limited Mesozoic in which a suite of conglomerate is found in the front of thrust fractures in Late-Jurassic.

北区以正谊关断层为界，可进一步分为桌子山段和银川地堑及横山堡两大段，其中的横山堡段可根据断层展布方向、构造特征的差异，分为铁克苏庙、陶乐东和色伦卡德庙南三段。

Based on the selection of similar structure, a method for predicting the rock drillability of wildcat well is proposed.

该方法首先应用已钻相似构造井的地震资料、测井资料以及岩心测试资料，建立岩石可钻性钻前预测遗传神经网络模型，然后将神经网络与遗传算法有机结合起来，以神经网络理论为基础，利用遗传算法优化隐含层神经元个数和网络连接权值，最后利用野猫井的地震资料进行岩石可钻性钻前预测。

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。