相似条件

In their structures, polyanions are bridged by Ln ions via the coordination of the bridging oxygen atoms and terminal oxygen atoms, forming a W–Ot′–Ln–Ob–W linkage; and through the W–Ot′–Ln–Ob–W linkage a one-dimension infinite linear chain with alternating cations and anions is formed.

在相似的合成条件下，我们向原有体系内加入顺丁烯二酸作为有机配体，合成了化合物7，其7的基本结构和化合物1-6很相似，但有一个顺丁烯二酸阴离子取代了一个NO3-离子的位置。

The analysis shows that the molecule chain coupling is the common feature of the two systems.

结果表明：一定条件下聚合物凝胶和疏水缔造合聚合物溶液具有相似的溶液结构和流动特性；胶态分散凝胶在多孔介质中的流动存在转变压力，2组流动实验中疏水缔合聚合物溶液也表现出类似的转变压力，分析认为聚合物凝胶分子链间的联结是化学交联，而疏水缔合聚合物为物理缔合，类似的分子链间联结方式是两种体系有相似流动特性的内在原因。

It is difficult to implement the face recognition mechanism using computers for several reasons. Human face is a deformable object composing of complex 3D curve surfaces, which is hard to be represented in form of mathematics.

计算机人脸识别是一个复杂而困难的问题，其原因是：人脸是由复杂的三维曲面构成的可变形体，难以用数学描述；再者，所有人的人脸结构高度相似，而人脸的图像又受年龄和成像条件的影响，这使得同一人在不同条件下的差别可能比不同的人在相同条件下的差别还要大。

We give a sufficient condition for the self-similar set in the plane which is homeomorphic to the unit disk.

最后一章讨论自相似集的拓扑结构，给出了平面上的自相似集同胚于单位圆盘的充分条件。

On the other hand, we obtain a partial estimate principle, by which we can estimate the lower bound of packing measure for the self-similar sets satisfying strong separation condition.

除此之外，受到文献[46]的启发，利用自相似技巧，本文还得到一个部分估计方法，用于估计满足强分离条件自相似集的填充测度的下界。

The influences of dispersion length and nonlinear length on the pulse′s self-similar evolution are studied,and the self-similar evolution conditions of the input pulse are obtained.

研究了色散长度和非线性长度对脉冲自相似演化的影响，获得了放大器中脉冲实现自相似演化的条件。

This paper gives two equivalent conditions of similar and quasi-similar operators on the sequence space and the relation between them.

在给出序列空间上相似算子与近相似算子的等价条件后，探讨两者之间的关系，并得到新结论。

The single valued condition of the model is determined and a tunnel model of similar simulative test is designed.

通过推导气固两相流动相似准则，确定了模型的单值性条件，设计了相似模拟实验的巷道模型并进行了磁化帘降尘模拟实验。

And by using the initial conditions as well as the end conditions, the dynamic problem is then transferred to a second kind Volterra integral equation about the function of the axial strain with respect to time which can also be solved successfully by the interpolation method. For piezoelectric and pyroelectric hollow cylinders, by following the solving procedure for elastic hollow cylinder and by using the electric boundary conditions, the dynamic problems are transferred to two Volterra integral equations about two functions of time, one is axial strain and the other is related to electric displacement, which can also be solved efficiently and quickly by employing interpolation method. The elastodynamic solutions of hollow spheres, which are made of elastic, piezoelectric and pyroelectric materials, respectively, for spherically symmetric problems are also obtained.

对于弹性空心圆柱，通过引入一特定函数将非齐次边界条件化为齐次边界条件，然后利用正交展开技术，导出关于时间函数的方程，再结合初始条件和端部边界条件，将原问题转化为关于一个时间函数的第二类Volterra积分方程，运用插值法可给出此积分方程的解；对于压电和热释电空心圆柱，利用求解弹性空心圆柱相似的方法，再结合电学边界条件，原问题转化为关于两个时间函数（轴向应变和与电位移有关的函数）的第二类Volterra积分方程组，同样可用插值法来构造相应的递推公式高效地求解此积分方程组。

In this paper, on full automatic production condition, parameters of on-line sand testing system and double-disk cooler were optimized, and moulding-sand parameters of clay content, permeability, compactibility, and so on, were adjusted and optimized, and moulding-sand property parameters' control on full automatic production condition was also involved. The results can supply some reference for other similar production.

本文着重介绍了全自动生产条件下在线型砂性能检测控制仪、双盘冷却器控制参数的优化，结合生产铸件对型砂性能的实际要求，对型砂含泥量、透气性、紧实率等参数进行的调整和优化，以及全自动生产条件下砂处理工艺参数的控制范围和控制方法，本文可为相似生产条件下砂处理系统的调试和型砂性能控制提供一些参考。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。