作用中心

This is because the electric field may not affect conformation of the active center.

其原因可能是电场作用对活性中心的构象没有影响。

By using the swirling strength method,the vortex structures excluded the effect of shear were shown clearly,and were concentrated in the coniform area of the central mixing flow field.With increasing Reynolds number,swirling strength increased and the coniform area became narrow.

利用旋涡强度法分析流场清楚地显示出排除了剪切作用的涡结构主要集中在混合层中心的锥形区域，随着Reynolds数的增大，旋涡强度的值不断增大而锥形区域不断变窄。

Since land resource plays a very important role in the development of county seat, it is the fundamental element in production.

摘 要：县城是一个县域政治、经济、文化的中心，聚集着县域内大量的资金、人才等要素资源，土地在县城发展中占有十分重要的作用，是最基本的生产要素。

The Luding county town plays a crucial role in the economic development, which is the center of the politics , economy and culture of the whole county .

泸定县城是泸定县政治、经济、文化的中心，在经济发展中起着至关重要的作用。

In addition, the energy of s and p orbits of F2 or F3 ion is lower in the ferroelectric phase than in the cented symmetry phase and the covalence character of F1 ion whose contribution to the displacement is largest almost lose, which stabilize the structure of the ferroelectric system.

铁电相F2(F3)离子的能量低于中心对称相，最大位移贡献者F1的化学键性由弱共价作用到离子键的变化也是最大的，这均有利于体系的稳定。

In order to study the fatigue of pressure vessel commonly encountered problem in engineering with large destructibility , based on the theory of fracture mechanics , the pressure vessel existing original crack was equivalent to the problem of infinite flat with center crack .

为了分析工程中常见的破坏性极大的压力容器疲劳问题，基于断裂力学理论将存在初始裂纹的压力容器等效为无穷远处作用均匀拉应力的含中心裂纹无限大板问题，解出表面半椭圆裂纹和穿透裂纹的应力强度因子；利用断裂判据得到裂纹的临界断裂尺寸；采用Paris表达式对裂纹扩展速率进行描述，推导出初始裂纹在不同裂纹尺寸和形式下的裂纹疲劳扩展寿命。

We consider thatthis is originated from the motion of magnetic flux linesaround the pinning centres and the diamagnetic effect at thespecimen surface.

认为这是由于磁通线在钉扎中心附近的运动和在试样表面的抗磁作用所引起的。

The library that is the cultural center rises the prominent function in constuct the socialism diapason society.

作为文化中心的图书馆在建设社会主义和谐社会中起到举足轻重的作用。

Under this tectonic stress, the neotectonic movement of the basin is active. The main manifestations of the neotectonics include the formation of unconformities at the end of the Miocene, the Pliocene and Quaternary within the sequences, the shift of sedimentation centers, the strong fault activities, echelon pattern of diapir structures, mud volcanoes and earthquakes.

受该应力场作用，盆地新构造运动活跃，主要表现包括中新统末、上新统与第四纪之间及层系内部的不整合，盆地的沉降，沉积中心的迁移，断裂活动，底辟带的发育与分布，泥火山和地震等。

The author argues that the measurable distance between the core of the topic schema and an activated component within can well contribute to an assessment of discoursal continuity and inferential quantity, though the difference between the serial schema and the hierarchical schema should not be neglected.

作者认为，话题图式内诸成分之间的两种不同性质的距离，在保持话语连续性和支持语用推理时起重要作用，因为对话语连续性和语用推理量的折算，可以参考话题图式中被话语所激活的成分与话题图式中心成分的距离或与话题图式自身的认知紧密度。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。