二次形式

There have been a good number of abstract art of substantial content and varied form in the past twenty years. Abstract art of Shanghai has become an important genre of contemporary art, gaining momentum as it goes, with great variety and new concepts.

近二十年以来，上海举办了多次内容丰富、形式多样的抽象艺术展览，上海抽象艺术业已成为我国的一种重要的当代艺术现象，并出现多元纷呈、观念不断更新的强势劲头。

The general infinite dimensional modal system describing liquid nonlinear sloshing is derived first by pressure integral variational principle. After selecting two dominating modes and three secondary modes based on the Narimanov-Moiseev third order asymptotic hypothesis, the infinite dimensional modal system is reduced to a five dimensional asymptotic modal system.

首先通过压力积分变分原理推导出描述液体作非线性晃动的一般形式无穷维模态系统，然后根据 Narimanov-Moiseev三阶渐近假设关系，通过选取二阶主模态和三阶次模态，将无穷维模态系统降为五维渐近模态系统。

However, the smoothness and convergence of these methods are not satisfactory. Because cubic spline function can be a piecewise, and its second order derivative is continuous, it is smooth and convergent.

但以上算法的光滑性和收敛性不好，而三次样条函数具有连续的二阶导数，且可采用分段函数的形式，具有很好的光滑性和收敛性。

Differential equation of a damped forced vibration and its solution.

有阻尼强迫振动微分方程的标准形式，二阶常系数非齐次微分方程。

By introducing the two dimensional homogeneous coordinates of an infinite point on Euclidian plane,the point coordinates and linear coordinates of an infinite point in straight lines,some theorems and conclusions referred to infinite points are applied in the classifications of structures in this paper.

引入了欧氏平面上无限远点的二维齐次坐标和直线上无限远点的点坐标及线坐标，引用了与无限远点有关的一些定理及结论于结构的分类中。从而给出了可变体系中的常变与瞬变在结构形式上的区别，完善了杆系平面结构几何组成规则的内容

The second-order linear homogeneous differential equations in differential equation theory occupies an important position, but the second order differential equation has no general solution method, most of the solutions of these equations is difficult to obtain analytical expressions and even some impossible to obtain the solution of the form, and the second order differential equation solving is divided into homogeneous and inhomogeneous problems.

二阶线性齐次微分方程在微分方程理论中占有重要位置，但二阶变系数微分方程却没有一般的求解方法，大多数这类方程很难求得解的分析表达式甚至有的根本不可能求得其解的分析形式，并且二阶变系数微分方程的求解又分为齐次的和非齐次的问题。

In Gong fu, Shifu Shi Yanzi, studied many traditional Shaolin forms during his time at the temple, among them were; 72 styles in which he became a master at the iron jacket and iron leg; sanshou a form of free fighting that involves punching, kicking and throwing amongst its range of techniques and which he was eight-time national champion of China and world champion twice; and hand and weapon forms, notably Xiao Hong Quan, Da Hong Quan, Lohan Quan and Xingyi Ba.

在功夫方面，释延孜在少林寺期间学习了许多传统少林功夫技能。通过练习七十二式，他精通铁砂胸和铁砂腿；在包括踢、打、摔的自由搏击形式散手方面，他获得全国冠军8次，世界冠军2次；在拳种和器械方面，他以擅长小洪拳、大洪拳、罗汉拳以及心意把闻名。

Sugar was once "king" in Hawaii, dominating lives on the islands from the mid-1800s until after World War II. By 1884, there were 96 sugar plantations there, but labor costs and changing world conditions killed the sugar-growing industry in Hawaii. Today only two working plantations remain.

糖曾经是夏威夷的&天王&，在19世纪80年代中期至二次世界大战结束的这段期间，一直主宰着岛上居民的生活。1884年时，那儿有96座甘蔗园，但劳工成本及不断变化的世界形式扼杀了夏威夷的制糖产业。

The scale and strength of passage vortex is also simulated in the flow filed incascade with straight and positively curved blade by using total 3D N-S solver.The results indicate that the passage vortex which is the main part of thesecondary flow can be limited in small-scale steady shape by using curved blade.

借助于全三维N-S方程的求解程序，对直叶片和弯叶片两种流场中的通道涡的尺度和强度进行了数值模拟，模拟结果表明，采用弯叶片可使对二次流起主要作用的通道涡限定在尺度较小的稳定形式上。

Fter the Second World War, the Japanese political system has become clearly democratic in the formal sense of popular sovereignty.

bstract 二次大战后，日本的政治体制在形式上的国民主权下，已经很明显的迈向民主化。

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。