非有效的

Scattering characteristics are studied of inhomogeneous cylinders immersed in an absorbing medium illuminated normally by plane waves. Scattering and extinction cross sections are derived, and the efficient algorithm is presented. Scattering matrix is simulated and discussed.

系统地解决了吸收介质中非均匀柱粒子对垂直入射平面波的散射问题，包括散射场、散射截面、消光截面的解析解，提出了快速、有效的计算方法；数值模拟了均匀、非均匀圆柱的散射矩阵，并与已有文献发表结果对比。

The direction of the relationships of the current variables is determined by a statistical method and lead to directed acyclic graph.

用统计分析的方法确定当前变量之间联系的方向，建立了有向非循环图，最后以模拟序列为例，验证了所提出的方法是可行且有效的。

The core issue of nutrient control was focused and the dynamic studies on phosphorus pollution of the whole watershed were conduced: 1 to highlight the non-point source pollution control, which is the difficulties research subject of water resource protection; 2 to perfect the calculation method for phosphate input and output, providing important basis on decision making for nutrient control; 3 to establish database and water quality model, to predict the water quality response after different phosphorus control schemes realized; 4 to determine admissible phosphorus loading and control standard according to the quantitative relationship between the external force function (mainly the exotic nutrient salt concentration or loading) and internal nutrient state response, and to work out the effective and practical techniques for eutrophication control.

围绕营养盐控制的核心问题，进行全流域范围磷污染的动态研究：1）突出了目前我国水资源保护研究难点—非点源污染控制；2）完善了流域水库磷盐收支计算方法，为流域营养盐控制决策提供了重要依据；3）建立数据库和水质模型，预测了在实施不同磷削减控制方案后流域供水水质的响应情况；4）根据湖泊外力函数（主要是外来营养盐浓度或负荷）与湖库内营养状态响应间的定量关系，确定了磷允许负荷量及控制标准，提出了有效的富营养化控制实用技术。

Photograph of organization of economy of new-style farmer collaboration relatively the market price standard that issues anthropomorphize of organization of economy of formation community collaboration, blame at traditional system," company + farmer " agricultural industrialization runs an organization, be helpful for reducing agricultural industry to specialization in process of division of labor inside unripe outside mixing, be born trade charge, be a kind trade effectively harmonious mechanism.

新型农民合作经济组织相较于传统体制下形成的社区型合作经济组织、非人格化的市场价格、"公司+农户"农业产业化经营组织，有利于降低农业产业专业化分工进程中的内生和外生交易费用，是一种有效的交易协调机制。

This system includes two steps of segmentation and recognition. In the second step, first, a segmentation method is adopted to find the character nonlinear segmentation paths by combining gray scale and binary information based on a Viterbi algorithm; then, a recognition method of using a Viterbi algorithm is adopted to dynamically combine and recognize the character candidates with their reliabilities generated from the recognizer.

在第二次切分识别过程中，首先，在候选切分点区域，结合灰度图像与二值轮廓信息，采用基于Viterbi 算法搜索的非直线路径进行切分，得到有效的切分路径；然后，结合分类器输出的可信度，采用Viterbi 算法来合并前面得到的候选切分图像块，进行动态切分与识别。

Swirling flow separation is one of the important applications of centrifugal force field on centrifugal science and technology aspects.

论文摘要：离心力场的创立和运用是科学和技术的成就之一，运用离心力场进行非均相物系的分离是非常有效的。

Aluminum drive and gear covers decrease oil temperatures prolonging bearing,gear,and seal life.

齿轮端 和非驱动端的铝制散热盖，有效的降低油温，增加轴承，齿轮，密封的使用寿命。

Recently, the anti-SARS measures and the frank information regarding the matter was effective in alaying our anxieties.

近期，他们实行所有防治非典的措施和相关信息的及时通报也有效地消除了我们的忧虑。

They could be applied more effectively by capitalising the institutions that are burdened by distressed securities directly rather than by relieving them of the distressed securities.

通过为持有不良证券的机构直接注资，而非剥离它们的不良证券，可以使这些原则得到更有效的应用。

Combined identifications can be carried out for thermal parameters and boundary conditions etc.

该模型不仅考虑了非均质和参数分布的影响，而且也便于正反演问题的敏度分析，可对导热系数和边界条件等宗量进行有效的单一和组合识别。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。