查询词典 homogeneous space

The fix point of solutions and the derivatives of solutions of comples meromorphic function coefficents higher order of comples homogeneous linear differenliad equations are studied,and get two results of fixed point of homogeneous higher order linear differenliad equations with Meromorphic Function Coefficents,the results obtained generalize the related results of some authors.

研究了复域线性微分方程的解及其解的导数的不动点与超级问题，得到了亚纯函数系数的齐次线性微分方程的解及其解的导数的不动点的一个结果，所得结果推广了一些相关结果。

A given tectonic force may be resolved into two parts: homogeneous stress and differential stress. Homogeneous stress refers to isotopic pressure,which is superimposed on the original pressure and affects the equilibrium of various chemical reactions. It is also a factor that influences petrogenesis,metallogenesis and metamorphism.

构造力可以分解为两部分一部分是均应力，指各向相等的应力，它叠加在原有压力之上，并且影响着各种化学反应的平衡，也是成岩、成矿和变质作用的影响因素。

Its rapidsolidification behaviour during recalescence was studied by means of high speed cinematography andrapid infrared pyrometry,It is found that interface heterogeneous nucleation takes place in preferenceto homogeneous nucleation even at an undercooling above the previously accepted critical undercool-ing 0.2T_mfor homogeneous nucleatio...

采用高速摄影及快速红外测温技术研究了深过冷熔体的快速凝固行为。发现尽管过冷度超过了以往认为的均质形核临界过冷度0.2T_m，但是 Ni-32.5%Sn 共晶合金仍然优先发生界面异质形核，再辉过程中瞬时凝固速度最大可达784mm/s。

Firstly, with the thermal conduction equations of second homogeneous boundary and non-homogeneous boundary condition,we gained the temperature distribution in and after the heating process of the absorbing cavity.

用第二非齐次边界条件和第二齐次边界条件的热传导方程分别建立了吸收腔在激光加热过程中和激光加热结束后的温度分布，利用模拟实验对激光照射吸收腔的过程进行模拟，得到内、外壁温度差的实验数据。

Chapter 2 is devoted to study of exact solutions of the nonlinear evolution equations. Using solutions of a Bernoulli equation instead of tanh in tanh-function method we find some more general solutions of the KdV-Burgers-Kuramoto equation , and by using the nonlinear telegraph equation we show that there are many different choices on its balancing number m and the power n of the nonlinear term in Bernoulli equation by which we can recover the previously known solutions and also can derive new square root type solitary wave solutions. Exact solitary wave solutions for a surface wave equation are obtained by means of the homogeneous balance method. We also present an approach for constructing the solitary wave solutions and non-solitary wave solutions of the nonlinear evolution equations by using the homogeneous balance method directly, which is also used to find the steady state solutions, solitary wave solutions and the non-solitary wave solutions of the 2+1 dimensional dispersive long wave equations. The soliton-like solutions of the BLMP equation and the 2+1 dimensional breaking soliton equation are found by use of the symbolic-computation-based Method.

第二章中研究了非线性发展方程的精确解：用双曲正切函数法中的双曲正切函数换为Bernoulli方程的解的方法而给出KdV-Burgers-Kuramoto方程的精确解并用非线性电波方程为例说明了平衡数m和Bernoulli方程中非线性项的次数n有着多种选择的可能，它不但使我们能找到已知解而且也能找出新的根式孤立波解；用齐次平衡法给出一个曲面波方程的精确孤立波解，并提出直接用齐次平衡法寻找非线性发展方程的孤立波解、非孤立波解的方法，作为应用给出2+1维色散长波方程组等的定态解、孤立波解、非孤立波解等；用Symbolic-computation-basedMethod获得BLMP方程和2+1维破裂孤子方程的类孤子解；提出sine-Gordon型方程的直接求解方法，并获得sine-Gordon方程、双sine-Gordon方程、sinh-Gordon方程、MKdV-sine-Gordon方程和Born-Infeld方程等的精确孤立波解。

Globally uniform stability is obtained for a class of nonlinear continuous cascaded systems by using homogeneous properties of homogeneous systems.

摘要针对一类非线性连续级联系统，利用齐次系统的齐次性质给出了其全局一致稳定性分析结果。

On basis of measurement of homogeneous temperature of inclusions, analysis and calculation of δ〓C and δ〓O, and SEPM analysis, the author has studied the forming temperature of authigenic quartz and carbonate minerals for the first time. Furthermore, the author points out that it is unreasonable to recover paleo-geothermal gradient directly using homogeneous and modern burial depth.

作者在包裹体均一温度测量、碳氧同位素测量和计算及电子探针分析的基础上，首次对吐哈盆地侏罗系自生石英和碳酸盐矿物的形成温度进行了研究，确定了这两种成岩矿物的形成温度，并指出直接用包体均一温度和地层现埋深恢复古地温梯度存在不合理性。

It was found that increasing pressure for blank can improve the compactedness of blanks so as to make foam aluminium materials with homogeneous pores. Foaming temperature, as one of the main influencing factors on foaming process, should be controlled higher than the melting point of Al or Alalloy to a certain extant in order to keep a reasonable viscosity. Thus, the foam aluminum with homogeneous pores and high porosity is available. As shown by experiments, such materials should be made on conditions that they shall be protected with molten salt under 300?MPa pressure at 675～680?℃.

研究了粉末冶金法制备泡沫铝材料的方法讨论了发泡过程中的保护方式、制坯压力、发泡温度等参数对泡沫铝体积质量、孔隙率、孔结构的影响，并对发泡机理进行了探讨增大制坯压力使得金属坯致密，可以得到孔结构均匀的泡沫铝材料；发泡温度是影响发泡的主要因素之一，发泡温度控制在高于铝或铝合金熔点，同时保持熔体具有一定粘度的范围内，能够得到孔结构均匀、高孔隙率的泡沫铝材料实验结果表明：采用熔盐保护方式，在300MPa的压力下，温度在675～680℃时，可得到孔径均匀、孔隙率高的泡沫铝材料。

Intraventricular and ependymal seeding lesions all showed as homogeneous masses and intensive homogeneous enhancement.

脑室内病灶或室管膜下播散结节，均未见坏死区，增强呈明显均匀强化。

The unniquess result on homogeneous special Lagrangian fibration with singular central fibers is proven, which says that special lagrangian fibration with homogeneous isolated singularity is essentially the model of Harvey-Lawson.

证明了当特殊拉格朗日纤维化在孤立奇点附近是代数的，则奇异性是唯一的。这个纤维化在孤立奇点的结构本质上是Harvey-Laweon在1982年给出的模型。这个结果在纤维化的奇异结构的研究中是十分重要的。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。