分级

It was found, several products with different molecular weight can be separated from a rough dextran and UF process was enhanced observably by an electric field. There is an optimal voltage corresponded to different concentrations. Based on mass balance, gradational UF can be used as a simple and effective method for biomacromolecular analysis.

实验结果表明，分级超滤法能从单一的粗品中分离出分子量范围不同的多个产品；外加电场对超滤过程有较明显的强化作用，不同浓度的料液存在其对应的最佳外加电压；基于质量衡算的分级超滤可以作为生物大分子物质的一种简便而且有效的分析手段。

Financial transfer payment system is one important portion of gradational finance and taxation system. It is very important for gradational finance and taxation system to realize the national economic goal of adjusting control that we develop correctly the effect of financial transfer payment system Finance shift payment amount between the government of our country is huge very much.

财政转移支付制度是分级财税体制中一个非常重要的环节，正确发挥财政转移支付制度的效应，对分级财税体制顺利实现国家各项经济调控目标具有重要意义。

The innovation of this paper is to design the model of government spending under gradational finance and taxation system. Simulate one submodel to implement shifts payment according to the actual enforcement condition of the financial transfer payment system of our country. Apply this submodel into shift payment effect demonstration analyzing, then reach enforcement result of our country shift payment.

本文的创新之处是通过构建分级财税体制下的财政支出模型，按照我国分级财税体制的实际实施情况模拟出一个实施财政转移支付的子模型，应用该子模型对我国财政转移支付效应进行实证分析，进而得出我国财政转移支付效应实施效果。

Based on the analysis of Jeremy Harmer's education theories and foreign learning theories as well as investigation in Zhejiang ocean university, we explore the aims of grading English in college English teaching, its necessity and its strategies and principles which we will adopt to develop college English teaching effectively.

摘要以英国英语教学专家杰里米？哈默教育理论、语言学习理论以及高校学生个体差异调查分析为依据，探讨在大学英语教学中实行分级教学的目的与必要性，以及有效实行大学英语分级教学的策略和原则。

An integrated hierarchical matching method based on classification management of the road network is firstly proposed considering the different characteristics of urban roads. This method is conducive to use different matching algorithm according to both different road condition and navigation demand, and can better coordinate contradictions between the accuracy and real time of matching.

在改进现有地图匹配算法的基础上，针对城市道路的不同特点，首次提出基于道路网分级管理的分级匹配综合方法，有利于根据不同的路况和导航需求采用不同的匹配算法，可较好地协调地图匹配的准确性和实时性的矛盾。

Following this route, the precipitates disperse homogeneously in the alloy, and the mechanical properties are obviously improved.

用正交试验方法研究了2024铝合金的分级时效工艺，优选出了一种能获得均匀、弥散分布的沉淀强化相以改善铝合金的常规力学性能的分级时效工艺： 100℃，2h+190℃， 2h。

Dr. Howitt's research focuses on public management and intergovernmental policy implementation, including crisis management/emergency preparedness and transportation policy. He has conducted research or consulted for public agencies at the federal, state, and local levels, as well as lecturing widely on these subjects.

Howitt教授的演讲首先回顾了近年来发生在中国的几次重大危机事件，通过对危机进行分级，详细阐述了在危机管理中领导力的重要性和应用，接着对危机进行了分级别的定义，又针对不同层级的危机进行了深入浅出的剖析。

Secondly, the paper is expanded from follow three aspects: the virtual design, the virtual process and the product data managementduring the developing the torque converter. Applying the key technique of concurrent engineering---design for function, design for assemblyand design for manufactureof the method of design for "X", the virtual design of the torque converter is accomplished in CATIA V5. Then the model constitution and the simulation of virtual process of the torque converter is done in CATIA V5, including the model constitution and the simulation of 5-aixe NC virtual process of the vane, the model constitution（material:PVC） of the idler pulley rapid prototypingand the virtual assembly and the motion simulation of the torque converter, etc. 3-D data exchange between various CAD systems is realized by using STEP standard. The lever of classing the character model of the torque converter is given. And the access authorization is set up and given to manage the partners' reading/writing the product data.

应用并行工程的关键技术之一——面向产品全生命周期的设计DFX中面向功能的设计DFF、面向装配的设计DFA和面向制造的设计DFM的方法，在CATIA V5中完成液力变矩器虚拟设计；在CATIA V5中对液力变矩器进行虚拟加工建模和仿真，包括液力变矩器导轮叶片五轴数控加工刀轨建模与仿真、导轮快速成型RP建模、液力变矩器虚拟装配和运动仿真等；采用STEP标准实现多CAD系统之间三维数据交换，提出液力变矩器特征模型的分级标准并对三维模型数据进行分级管理，制定相应的权限等级以规范合作厂家的产品数据管理层次。

Wang Changqi from China Institute of Aerodynamics （ he is the inventer of the first Supersonic Jet Pulverizing in China ）, we have successfully produce three Supersonic, Cryogenic, Fluidized Bed Superfine Powder Pulverizing/classifying equipment , their type is CF26、 CF29、 CF50, they could be used in large-scale production and laboratory.

我厂是专业从事超流化床超微粉碎分级设备生产厂家，本企业汇集了空气动力学、结构力学、金属材料学、机械制造学、粉末冶金学等学科的相关专家，在中国空气动力学专家王昌棋将军(中国首台超音速气流粉碎机发明者)主持下，成功地研制、开发出适应大规模生产和实验室研发用以极规模生产用 cF26、 cF29、 cF50三种系列多种规格的超音速、超低温、流化床式超微粉碎分级系统设备。

Most chemical occupational-disease hazards were low to the limit of GBZ2-2002 except lead smoke and carbon monoxide in front of the furnace. The noise of most workplaces was classified as 0 except those above Ⅰ at some workplaces like grinding, granule-making, etc. The hot working environment of the furnace was classified as Ⅵ, other hot working environments were classified asⅠ.

除炼铁厂炉前铅烟、一氧化碳个别点超标外，其他化学性职业病危害皆未超过接触限值；除个别岗位如破碎、制粒等噪声作业分级为Ⅰ级以上外，大部分作业点噪声作业分级为0级；炼铁厂炉前高温作业为Ⅵ级，其他热源岗位为Ⅰ级。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。