二项的

Because the diffusive term is discretized with divided forward difference or divided backward difference according to the sign of convection velocity, these methods keep first order accuracy for diffusive term.

3.2考虑规则网格上的一维和二维定常型对流占优扩散问题，离散方法采用了有限体积方法及普通的有限差分方法，基本离散思想是将对流项提高到二阶精度，扩散项则根据对流速度的方向决定采用向前或向后差商离散。

On the basis of the kinetic equation of substrate reaction in the presence of urea or guanidine hydrochloride, all microscopic kinetic constants for the free enzyme and enzyme-substrate binary and ternary complexes have been determined. The results of the present studies indicate that:①In the presence of urea or guanidine hydrochloride, enzyme-substrate complexes lose their activity less rapidly than the free enzyme. Therefore, both substrates, NADPH and 7, 8-dihydrofolate, protect dihydrofolate reductase against inactivation.②The denaturation of dihydrofolate reductase by urea follows single-phase kinetics, and changes in enzyme activity and tertiary structure proceed simultaneously in the unfolding process, so it may be an"all or none"process.③The GdnHCl-induced unfolding of the dihydrofolate shows a biphasic transition, while the change in the enzyme activity is a single exponential process. The rate constant of inactivation is consistent with that of the fast conformational change. Therefore, the kinetic intermediate of protein unfolding should be a partially folded and inactive form.

我们根据在脲或盐酸胍存在下的底物反应动力学方程求得游离酶和酶底物二元、三元复合物的微观动力学常数，结果表明：①酶-底物二元、三元复合物的失活速度明显慢于游离酶，说明两个底物二氢叶酸和NADPH对酶的失活都具有一定程度的保护作用；②在脲作用下，酶的失活和构象变化均为单指数项过程，而且酶的活力丧失和三级结构变化是同时发生的，说明二氢叶酸还原酶的脲变性可能是一个"全或无"的两态过程；③在盐酸胍作用下，酶的构象变化为两相过程，而失活则是单指数项过程，酶分子构象变化的快相速度常数与失活速度常数基本一致，因此我们认为二氢叶酸还原酶的盐酸胍变性过程中存在一个没有活力、但仍具备一定空间结构的变性中间体。

There were three major findings.(1) On the basis of the assessment of overall model fit and parameter estimates, the hypothesized second-order confirmatory factor analysis model represented an adequate fit to the sample data.(2) According to the cross-validation analysis, the second-order factorial validity of this scale was very stable.(3) This hypothesized model was invariance across these five important demographical variables, including school, gender, grade, right/left-handedness, and past experience in unintentional injury, via the testing of invariance in the multiple groups.

结果有三项主要的发现：第一、经整体暨个别的残差分析、整体模式之适配与其取代指标，以及估计参数之统计考验等结果，均指出假设此量表为二阶因素分析测量模式是相当恰当的；第二、经交互确认效度分析结果，显示此量表之二阶潜在因素结构是非常稳定；第三、经多组别不变量统计考验结果，指出此量表之二阶潜在因素结构，对於学校别、性别、年级、用手习惯，以及过去伤害经验这些社会人口变项，大致上具有因素个数、因素负荷量、因素变异数，以及测量误差变异数等不变量的特性。

According to the method of Englert, we introduce perturbation to calculate the system Hamiltonian.

我们按照Englert等人的计算方法对系统二次哈密顿项直接引入微扰即定义了一个尝试性的二次哈密顿项来进行微扰计算。

Article 50 Where an agricultural product sold by an enterprise engaging in production of agricultural products or a professional peasant cooperative economic organization is under any of the circumstances enumerated in Items (1) through (3) or Item (5) of Article 33 of the present Law, the said enterprise shall be ordered to stop selling the product, replevy the sold agricultural products, and make innocuous treatment of or supervise the destruction of the illegally sold agricultural products, meanwhile, its illegal proceeds shall be confiscated, and it shall be fined 2,000 Yuan up to 20,000 Yuan, in addition.

第五十条农产品生产企业、农民专业合作经济组织销售的农产品有本法第三十三条第一项至第三项或者第五项所列情形之一的，责令停止销售，追回已经销售的农产品，对违法销售的农产品进行无害化处理或者予以监督销毁；没收违法所得，并处二千元以上二万元以下罚款。

On the base of the search model"s analyze, this article analyze and discuss the principle and implement of the fashion Search Engine"s several technology, for example Innernet"s Building, Chinese Syncopate, Auto-Briers Building, the Search Result"s Rank and Several Level Intellective Search Agent.Now, full-text search is a mature technology. Its searchs the all and the one is success. But its accuracy is lack. In fact, the two technologies(Chinese Syncopate and Auto-Briers Building) should be broke through. To Chinese Syncopate, this paper brings forward a new technology that the partial adjust will be brought into effect after the Chinese is syncopated and the notional document brief is put forward to Auto-Briefs Building.

本文在对检索模型分析的基础上，重点对当前流行的搜索引擎中的几大技术(知识库的建立、中文切分、自动文摘的生成、检索结果的排序、多级智能检索代理的实现)的原理、实现进行了分析和探讨；目前，全文本搜索技术作为一种比较成熟的技术，其查全率方面已经做得比较好，但它的查询精度确有待进一步提高，究其原因是："中文切分"和"自动文摘的生成"这二项技术有待突破，本文中，对"中文切分"提出了切分算法加局部调整技术，对"自动文摘的生成"提出了"概念化的文档摘要"，以期能够起到抛砖引玉的作用。

Two major recent studies describe the advantages of such charges. Project 88-Round II [14], sponsored by then Senators Timothy Wirth of Colorado and John Heinz of Pennsylvania, says that unit pricing creates strong incentives for households to reduce the quantities of waste they generate.

二项主要的最近研究描述如此费用的利益。88个回合的 2[14] 的计划，到时候赞助了科罗拉多的叁议院议员梯牧草 Wirth 而且赞助了宾夕凡尼亚州的约翰 Heinz，说单位订定的价格产生强烈的激励让家庭减少他们产生的废物量。

In one hand, this kind of distribution enhanced the ability to withstand the adverse environment condition, in another hand, this kind of distribution had no benefit to extend the population and had some effect on the endangered state of Davidia involucrate.

通过对珙桐在湖北五峰后河的空间分布格局的研究，珙桐的种群偏离随机分布显著，由x~2检验和测定的各集聚强度指数也一致反映出琪桐种群的分布格局服从负二项分布，属集聚分布类型，水分和土壤因子是影响其生长进而影响其分布格局的主导因子，这种分布虽然增强了种群抵御不良环境的能力，但不利于琪桐扩散，对珙桐濒危有一定的影响。

Seven polyimides were synthesized and their films were uniaxially stretched to observe the variation in their in-plane birefringence. The creep method of DMA was used instead in stretching the PI films. The preload force and isothermal temperature were the two controlled factors that were chosen on the basis of the lowest stretchable force and lowest temperature for each PI structure. The elongation ratio of a PI film was then decided by the stretching time.

在此是以DMA 的另一种试片拉伸方式-Creep模式，来取代之前的Stress Relaxation模式对PI薄膜试片进行拉伸实验，Creep模式是以最低的拉伸力量及最低的拉伸温度的前提下，选择Pre-load Force与Isothermal Temperature这二项为拉伸控制因素，在此状态下的PI薄膜拉伸比是取决於其拉伸的时间，此种拉伸模式将可得到较高的拉伸比，而高的拉伸比是获取较高薄膜双折射率的必要条件。

Notes to the Financial Statements For the year ended 30 June 2008 20 TRADE AND OTHER RECEIVABLES The Group 2008 2007 HK$'000 HK$'000 Trade receivables 27,045 18,933 Less: Allowance for doubtful debts –(5,483) 27,045 13,450 Ageing analysis The ageing analysis of trade receivables (net of allowance for doubtful debts) as of the balance sheet date: The Group 2008 2007 HK$'000 HK$'000 Current to 3 months 21,357 12,325 Within 4 to 6 months 3,900 1,125 Over 6 months 1,788 – 27,045 13,450 The Group usually grants credit periods ranging from one to three months.

GOLDEN HARVEST ENTERTAINMENT LIMITED 162 Annual Report 2008 搜索公告牛即可看到网络上最快的个股公告财务报表附注截至二零零八年六月三十日止年度 20 贸易及其他应收款项本集团二零零八年二零零七年千港元千港元应收贸易款项 27，045 18，933 减：呆账拨备–(5，483) 27，045 13，450 账龄分析于结算日之应收贸易款项之账龄分析如下：本集团二零零八年二零零七年千港元千港元即期至三个月 21，357 12，325 四至六个月 3，900 1，125 六个月以上 1，788 – 27，045 13，450 本集团一般给予客户介乎一至三个月之信贷期。

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。