两对
- 与 两对 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Because the techniques of the biochemical waste treatment are very important, the techniques of the cultivation of the microorganism have received more attention in recent years. A study is conducted to analyze the steady states and dynamic bechavior of the reactions of the cell-substrate and the prey-predator interaction in two chemostats in series. For the reaction of cell-substrate in two chemostats in series, if the specific growth rate of the Monod model is used for the cell , there are three types of steady states for this reaction system. These three types of steady states and stability are analyzed in detail. The dynamic behavior of this reaction system is analyzed by the numerical method and computer graphs. The results show that the dynamic behavior of this system consists of stable steady states.
由於生物废弃物的处理技术相当重要,故最近几年来微生物的混合培养技术深受大家的重视,本研究实施菌类-基质(Cell-Substrate)和被捕食者-捕食者(Prey-Predator)相互作用之生化反应在两个生化反应槽串联之稳定状态和动态分析,对於菌类-基质之生化反应,若以Monod模式来表示菌类之比生长速率,则此两个生化反应槽串联之反应系统共有三种型态之稳定状态,本研究对此三种型态之稳定状态和稳定度作深入的分析,对於此反应系统之动态行为,则由电脑运用数值分析的方法及电脑绘图进行分析工作,动态分析的结果显示此生化反应系统之动态行为,以稳定之稳态为主。
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Separation of racemic mixtures of thirty-eight secondary aromatic alcohols and arylethanediols with different substituting group was achieved with HPLC by using Chiralcel OD and Chiralcel LJ as chiral stationary phase and hexane/2-propanol mixtures of different ratios as eluents. The chromatographic parameters of these racemates on OD and OJ columns were examined.
在ChiralcelOD和ChiralcelOJ两支多糖类手性固定相上,以各种不同配比的正己烷-异丙醇为洗脱剂对38种带有不同取代基的芳香仲醇及芳香乙二醇类手性化合物的对映体进行拆分,考察了这些外消旋体在这两支手性柱上的色谱行为。
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The major content of this thesis are as follows:1 Performed FEM analysis before strengthening, and to find out the reason for the cracking and present a strengthening scheme;2 Performed nonlinear FEM analysis before and after strengthening, and to get the varying rule of the relative displacement between the on-site cast concrete side wall and that between the precast concrete arch and the floor, as well as the stress distribution of the gallery;3 Performed on-site observation experiments on the 7~th gallery, and to get the varying rule of the relative displacement between the on-site cast concrete side wall, as well as that between the precast concrete arch and the floor.4 The results of the computation were compared with those of experiments, which verified the effect of the strengthening.
本文的主要工作有: 1 对加固之前的廊道结构进行有限元计算,找出廊道底板开裂的原因,提出加固方案; 2 对加固前后廊道结构进行非线性有限元计算,得到加固前后廊道两现浇边墙相对位移、拱顶与底板相对位移随水库水位变化的规律和廊道结构的应力分布情况; 3 进行廊道加固前后现场观测试验,得到廊道两现浇边墙相对位移以及拱顶与底板相对位移随水库水位变化的规律; 4 对比分析加固前后现场观测试验与非线性有限元计算所得结果,论证加固方案的合理性,验证加固效果。
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The commercial transform of agricultural products is low yet.In order to test the effects of different agricultural management plans,the AHPmethod was used to analyze the active and assumed plans.The results are as follows:1 The analyzing result for the active agricultural projects is:the establishment of fruit-producing base and all-season vegetable producing base are good agricultural projects;but silkworm feeding and stockbreeding contribute little to local agricultural development.
第三部分运用层次分析法,对当地现行的以及规划中涉及的相关农业方案进行了评价,结果如下: 1对现行农业规划项目的分析结果,干鲜果品基地建设、反季节蔬菜基地建设两项综合权重最高,是优秀的农业规划项目;而桑蚕基地建设和畜牧养殖两项经评价,对于农业发展的实际提高贡献不大,建议进行二次取舍。
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At a certain range, habitat loss and its spatial structure can benefit the control of the epidemic disease, which indicates the possibility of using human disturbance in habitat as a potential epidemic-control method in conservation.(6) Not only the quantity of habitat loss but also the spatial correlations of patch types caused by nonrandom habitat loss affect the invasion and transmission of disease. More fragmented landscape (high amount of habitat loss, low clustering of lost patches) hinders the parasitic infection, which also indicates that whether the spatial heterogeneity benefits or hinders the invasion is dependent on the considered ecological process.(7) Two components of the spatial heterogeneity (the amount and spatial autocorrelation of the lost habitat) form a trade-off in determining the host-parasite dynamics.(8) Within a certain range of habitat loss, host can counterbalance the positive and negative effects, and shows a rising tendency.(9) The epidemic is more likely to break out in the prey-predator system if only a small amount of habitat loss.(10) A highly aggregated distribution of species is a common behavioral strategy when dealing with habitat loss or other environmental stresses.(11) The parasite-host/prey-predator eco-epidemiological systems have the similar mechanism with the intraguild predation systems, and the predator acts as the intraguild predation, the infected prey acts as intraguild prey, and the susceptible prey acts as shared resource.(12) Species at the highest trophic level are no longer affected the most by habitat loss, which depend not only on the biological mechanism but also on the external environmental disturbances.
随着邻体数目的增加,病毒的感染力度变得更大而且在空间上形成聚集的波形;(5)生境破坏及其空间结构在一定范围内有利于疾病的控制,这暗示人为对生境的干扰可作为疾病控制的一个潜在方法;(6)生境破坏的数量以及不同类型生境的空间分布格局都显著地影响了寄生病毒的入侵和传播,生境破碎化程度越高(高丧失斑块的数量或低聚集程度),将越有害于病毒的入侵和传播,这暗示了空间异质性是否有益于物种的入侵依赖于所考虑的生态过程;(7)由生境破坏引起的空间异质性的两个组分之间存在负偶联关系trade-off(8在适度的生境破坏范围内,宿主种群能够平衡生境破坏带来的正负两种效应并呈现增长趋势;(9)在捕食-食饵系统中,寄生感染病毒极有可能在生境破坏量较低时爆发;(10)物种在面临生境破坏或者其它环境压力时表现出更高的聚集分布策略;(11)寄生-宿主/食饵-捕食生态传染病系统与共位捕食食物网结构具有相似的生物机制,其中捕食者扮演共位捕食者的角色,已感染食饵作为共位食饵,易感染食饵扮作共同消耗的资源;(12)位于最高营养级水平的种群对生境破坏的响应不一定是最敏感的,这不仅依赖于内在的生物机制同时也依赖于外在的环境干扰。
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the 160 women judoists are tested for mental fatigue and personality tests, and the paper tries to reveal their situation of mental fatigue, personality characteristics, and the relationship between them.it is analyzed that chinese elite judoists have no severe mental fatigue; judoists' negative evaluation on emotional/physical exhaustion and sport increase significantly one week before competition than two months; among personality factors, excitability predicts the decrease of achievement and emotional/physical exhaustion reliably on negative; the stability predicts sport on negative; tension predicts emotional/physical exhaustion on positive; adaption and anxiety in dimension personality predicts in positive both in the decrease of achievement and emotional/physical exhaustion and internal extraversion does them in negative; health personality in applied dimension personality predicts in negative in the decrease of achievement, emotional/physical exhaustion and negative evaluation of sport when mental fatigue, stability and sensitivity predicts the decrease of achievement in negative; only internal extraversion in dimension personality predicts the decrease of achievement and emotional/physical exhaustion in positive.
摘 要:以160名女子柔道运动员为被试,进行运动员心理疲劳以及人格测试,并尝试揭示女子柔道运动员的心理疲劳状况、人格特征以及二者之间的关系。分析得出:我国优秀柔道运动员心理疲劳程度并不严重;运动员在临赛前一个星期较赛前二个月情绪/体力耗竭以及运动的负评价显著提高;人格因素中的兴奋性对成就感的降低以及情绪/体力耗竭两维度均有可靠的负向预测作用;稳定性对运动的负评价维度具有可靠的负向预测作用;紧张性对情绪/体力耗竭有可靠正向预测作用;次元人格中适应与焦虑对成就感的降低以及情绪/体力耗竭均有可靠正向预测作用,内外向性对成就感的降低、情绪/体力耗竭以及运动负评价都有可靠负向预测作用。应用性次元人格中健康者的人格对运动员心理疲劳的对成就感的降低、情绪/体力耗竭以及运动负评价均有可靠的负向预测作用;稳定性、敏感性对临赛前成就感的降低维度的变化有可靠的负向预测作用;次元人格中只有内外向性对临赛前成就感的降低以及情绪/体力耗竭维度的变化有可靠的正向预测作用。
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Because the error mainly comes from theresonant region, the error correction method can only be used in resonant region, andcan effectively improve the efficiency of the statistical analyzing solutions. Two types of the mistuned bladed disks, whose friction damping are blade dryfriction damping and blade-to-blade dry friction damping, are modeled respectively. Amulti-harmonic method which can employ the fast Fourier transformationtechnique is proposed to investigate the vibratory response of the bladed disks withthese two types of nonlinear friction damping. Formulations of the solution for thesetwo types of motion functions are deduced. The characteristics of the forced responseof the bladed disks with these two dry friction damping are analyzed and summarizedunder various system parameters. The vibratory response of the bladed disk with dryfriction scatter mistuning is investigated.
针对叶盘系统中两类主要的非线性干摩擦阻尼形式,分别建立了具有叶片干摩擦阻尼和叶间干摩擦阻尼的失谐叶盘系统的非线性力学模型;提出了一种可利用快速傅立叶变换技术的多谐波分析方法;分别推导了具有这两类干摩擦阻尼形式的叶盘系统运动方程的求解公式;在各种系统参数条件下,研究了干摩擦阻尼失谐叶盘系统的受迫振动响应特性;对具有干摩擦散乱失谐的叶盘系统振动响应进行了研究,分析总结了干摩擦散乱失谐对叶盘系统振动响应特性的特殊影响规律。
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Long accustomed to the pair's skirmishes at family occasions such as weddings and bar mitzvahs, the Merrick, New York, resident resents being a captive audience but has never told her relatives how unfair she thinks their fractious behavior is.
长期以来习惯了这两人在家庭场合(例如:婚礼、Bar Mitzvah这位来自纽约州Merrick市的居民对被迫成为一位听众心怀怨恨,但是却从来没有告诉她的亲戚们她认为两人的任性行为对她来说是多么地不公。
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First, we introduce and discuss the various methods of multivariate polynomial interpolation in the literature. Based on this study, we state multivariate Lagrange interpolation over again from algebraic geometry viewpoint:Given different interpolation nodes A1,A2 .....,An in the affine n-dimensional space Kn, and accordingly function values fi(i = 1,..., m), the question is how to find a polynomial p K[x1, x2,...,xn] satisfying the interpolation conditions:where X=(x1,X2,....,xn). Similarly with univariate problem, we have provedTheorem If the monomial ordering is given, a minimal ordering polynomial satisfying conditions (1) is uniquely exsisted.Such a polynomial can be computed by the Lagrange-Hermite interpolation algorithm introduced in chapter 2. Another statement for Lagrange interpolation problem is:Given monomials 1 ,2 ,.....,m from low degree to high one with respect to the ordering, some arbitrary values fi(i= 1,..., m), find a polynomial p, such thatIf there uniquely exists such an interpolation polynomial p{X, the interpolation problem is called properly posed.
文中首先对现有的多元多项式插值方法作了一个介绍和评述,在此基础上我们从代数几何观点重新讨论了多元Lagrange插值问题:给定n维仿射空间K~n中两两互异的点A_1,A_2,…,A_m,在结点A_i处给定函数值f_i(i=1,…,m),构造多项式p∈K[X_1,X_2,…,X_n],满足Lagrange插值条件:p=f_i,i=1,…,m (1)其中X=(X_1,X_2,…,X_n),与一元情形相似地,本文证明了定理满足插值条件(1)的多项式存在,并且按&序&最低的多项式是唯一的,上述多项式可利用第二章介绍的Lagrange-Hermite插值算法求出,Lagrange插值另一种描述是:按序从低到高给定单项式ω_1,ω_2,…,ω_m,对任意给定的f_1,f_2,…,f_m,构造多项式p,满足插值条件:p=sum from i=1 to m=Ai=f_i,i=1,…,m (2)如果插值多项式p存在且唯一,则称插值问题适定。
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Based on a careful exploration of the establishment,duties,ethnic backgrounds,mobility channels,previous experiences,and the terms of office of Liangjiang Viceroys,this paper concludes that most of the occupants of the position were honest,upright,and diligent and played a positive role in the development of Jiangsu Province.
本文对清前期两江总督的设置、职掌、民族背景、出身、任前职位、任期等进行探讨后发现,在此背景下走出的两江总督多数都能相对清廉勤勉,对江苏地区的发展产生了积极的影响,说明在专制皇权控制下清朝地方的发展,总督的因素不可忽视。
- 推荐网络例句
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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。
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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。
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A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。