比较地

We indicate that when wavelength number is larger than 16, even 8, all of the networks show good small blocking performance. Further, we discuss different aspects that affecting blocking, including routing, wavelength number, wavelength assignment, wavelength conversion, multi-fiber and network connectivity. We find out that increasing wavelength or implementing multi-fiber can reduce blocking dramatically while in light loads (＜0.4Er), fixed alternate routing or First Fit wavelength assignment can improve the performance to some extent.

为了进一步获得更优的阻塞特性，研究比较了影响阻塞率的几个重要方面，包括路由（固定路由与固定可选路由）、波长数与波长分配算法、波长变换与多光纤、网络连接度，结果表明阻塞特性通过增加波长或采用多光纤可以得到明显的改善，在负载较轻时(＜0.4Er)，改用可选路由方式或First Fit波长分配算法也可以一定程度地改善阻塞率，但是这种改善受网络连接度和波长数的影响比较明显。

Simplier and more efficient ion extraction methods for atomic vapor laser isotope separation AVLIS were evaluated using a 2-D electron-equilibrium model to compute and compare three electrostatic methods the parallel electrode method, the Π type electrode method, and the improved M type electrode method.

为探索用于原子蒸气激光同位素分离AVLIS的简单有效的离子引出方法，用二维流体理论电子平衡模型计算比较了3种静电场方法平行板电场法，Π型电极法，改进M型电极法计算发现，二维流体理论电子平衡模型并不能很好地描述Π型电极法对另外两种静电场方法，计算了不同外加电压、不同的初始原子密度和不同的目标同位素丰度等条件下的离子引出情况从计算结果可以看出，改进M型电极法不论是从离子引出时间还是从碰撞损失率，都要比平行板电极法好得多当外加电压较高或初始原子密度较高时，这种好处就更加明显因此，改进M型电极法是一种可供实际采用的比较好的静电场方法

Although the Preissman scheme of KP equation is multisymplectic, it took too efforts to realize, Hence we elimate the auxiliary variable by a trivial computation and obtained the multisymplectic forty-five points scheme of KP equation. And then, we test this forty-five points scheme on soliton and solitary waves over long time intervals, the numerical results shows the propagation and interact of soliton and solitary waves.

但是在实际的数值实验中，由于需要计算共轭动量的值，Preissman格式需要占用的计算内存比较大，计算时间比较长，因此我们在数值格式中消去共轭动量，最后得到与多辛Preissman格式等价的一个多辛45点格式，我们用这个格式进行了数值实验，数值实验结果很好地显示了孤立子和孤立波的传播与碰撞。

Using comparative molecular field analysis and comparative molecular similarity indices analysis, three dimensional structure-activity relationship (3D-QSAR) studies were carried out on a series of benzofuran N-myristoyl transferase inhibitors.

采用比较分子力场分析法和比较分子相似性指数分析法，系统地研究了40个苯并呋喃类N-肉蔻酰基转移酶抑制剂的三维定量构效关系。

AbstractUsing comparative molecular field analysis and comparative molecular similarity indices analysis, three dimensional structureactivity relationship(3D-QSAR) studies were carried out on a series of benzofuran N-myristoyl transferase inhibitors.

摘要采用比较分子力场分析法和比较分子相似性指数分析法，系统地研究了40个苯并呋喃类N-肉豆蔻酰基转移酶抑制剂的三维定量构效关系。

In[5],combining the algebraic topology method,we have proven that conjunction matrix is complete topological invariant of bounded closed domain in plane under F-homeomorphism.so,for any two bounded closed domain in plane ?

主要原因在于拓扑不变量通常比较难算，没有比较实用的方法来恰当地提取图形的拓扑不变量，尤其是对较复杂的图形而言更是困难重重。

Bringing regions to a canonical form also enables us to compare them quickly, by just comparing all rectangles in their chain.

把区域规范形式也使我们能够迅速地对它们进行比较公正的比较链中的所有矩形。"/页"

The small safety risk posed by lithium cobalt oxide is manageable in small devices but makes the material not viable for the larger batteries needed to run hybrid cars, Ceder said. Cobalt is also fairly

镍钴氧化物在小型电子设备中的危险是比较小的，也可以被适当地处理掉，但这意味着它不适合构成可驱动混合动力汽车的大型电池，希德教授说道，此外，钴也是比较昂贵的一种材料。

The American smiles tolerantly over the absence of central heating in most English homes when he is himself comfortably seated in his armchair in his centrally heated house in Chicago; the English man reads abut the sanitary arrangements in a certain tropical country, and the inhabitants of the latter read about London fogs, and each side manages to be detached and broad-minded.

在芝加哥，当美国人舒服地坐在安乐椅上时，他对在多数英国人家庭里没有中央供暖设备便会露出宽容的微笑。当英国人读到有关某些热带国家的卫生设施情况时，同样，当那些热带国家的居民读到有关伦敦大雾的情况时，他们各自都会比较超脱，比较宽容的。

The American smiles tolerantly over the absence of central heating in most English homes when he is himself comfortably seated in his armchair in his centrally heated house in Chicago; the English man reads abut the sanitary arrangements in a certain tropical country, and the inhabitants of the latter read about London fogs, and each side manages to be detached and broad-headed.

在芝加哥，当美国人舒服地坐在安乐椅上时，他对在多数英国人家庭里没有中央供暖设备便会露出宽容的微笑。当英国人读到有关某些热带国家的卫生设施情况时，同样，当那些热带国家的居民读到有关伦敦大雾的情况时，他们各自都会比较超脱，比较宽容的。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。