单中心的

However,innovation in agricultural science and technology also requires a new governance model,the traditional city-government at the center of the single-site model of governance of the system because of its inhere...

但农业科技创新也需要有新的治理模式，传统的以城市政府为中心的单中心治理模式由于其内在的制度性缺陷严重影响了科技长入经济的进程。

Tectonic subsidence play dominant role in their geometric shapes, basin fillings, sequence evolution and sediment distribution in the Wushi Sag. Outline of the sequences are in shape of box-wedge or sheet-wedge and boundaries of sequences are varied from bilateral fault to monoclinal fault overlap, so that the sequences show distinct semigrabens which overlay in different ways. Seven sequences were formed in different stage of tectonic evolution. The sequence of SQ1 formed in initial rift stage and deposited alluvial sequence. Sequences SQ2-SQ4 developed in intense rift stage and sediment lacustrine sequence. Sequences SQ5-SQ7 formed in late period of rift before thermal subsidence and deposit mere and delta sediment. The place adjacent to the synsedimentary fault is the subsidence center and depocenter; meanwhile, controlling fracture migrates in horizontal made subsidence and sedimentary center of the sag changed.

构造沉降是控制层序几何形态，充填叠置方式、演化及沉积体系分布的最重要因素：凹陷由多个半地堑在不同层序发育时期以不同方式叠置联结而成；受断层控制，层序外部形态有箱状-楔形、楔形-席状披覆型，边界终止方式有双断终止型、单断终止超覆型；不同构造演化阶段层序内部充填的沉积体系各具特征，初始断陷阶段的SQ1沉积冲积层序，强烈断陷阶段的SQ2-SQ4充填湖相层序，晚期断陷阶段SQ5-SQ7内部充填浅湖和河流三角洲沉积；同沉积断层陡坡带沉降迅速、可容纳空间快速增长，是凹陷的沉积和沉降中心，断陷期主控断裂活动时间和空间的变化导致了凹陷沉积和沉降中心的迁移。

By calculating the sub-cluster parameters and the total antioxidant capability parameter of some kinds of fresh vegetable with diet therapy function, we found that there is clear linear correlation between distribution parameters of biopolymer active center elements (1-x)1/3ln(r1r2/k)、(1-x)1/3ln(k2r1/r2) and antioxidant capability parameter ln[F(1-x)3], and which show monotone decreasing and monotone increasing respectively.

同时对更大范围内的9大类蔬菜和5大类水果的生物高分子活性中心元素分布及其维生素C及维生素E含量进行了考察，结果发现群子统计参数(1-x)1/3ln(r1r2/k)、(1-x)1/3ln(k2r1/r2)与维生素C、E含量参数lnVc(1-x)3、lnVe(1-x)3均分别呈单减和单增的线性关系。

The teaching term took sixteen periods. The curriculum contained two topics,"acid and base", and "Taiwan's climate". Experimental treatments were teaching method. The research tools utilized in the study were " Science Concept Comprehension Test, Science-related Attitudes Scale, Problem Solving Ability Test and Questionnaire on the Attitude toward Science Teaching". A pretest administered before the experimental treatment and a posttest was held after the treatment. The data of SCCT, SRAS, and PSAT collected from pretest and posttest were analyzed by two-way ANOVA. Responses from the QAST were analyzed by ANOVA.

本研究的实验处理为以问题为中心的合作学习教学，研究工具包括「科学概念理解问卷」、「科学相关态度量表」、「问题解决测验」、「对自然科的教学态度问卷」、「教学检核量表」及「问题中心教学自我评估量表」，分析「科学概念理解问卷」、「科学相关态度量表」和「问题解决测验」资料时，以前测经验和教学法为自变项，后测为依变项，进行二因子变异数分析；「对自然科的教学态度问卷」采用单因子变异数分析；「教学检核量表」及「问题中心教学自我评估量表」则用来检核研究者的教学是否符合研究者的研究设计；在质性资料的部分，则分析学生的上课纪录、教师教学反省纪录及对自然科教学的态度问卷的理由。

Setting up city track transportation system is the way to solve the traffic in the cities, and to realize substanable development. There have tow reasons: first, city track transportation has many merits, great capability, quick speed, safety on time, low cost, saving energy, catabatic traffic block on the ground, protecting the environment and so on; second, though track transportation, the develop derection of city constructure turns from single-center homocentric cirlarity mode to multi-center axes mode.

修建城市轨道交通是解决当前大城市交通问题、实现可持续发展的有效手段，其表现有二：第一，城市轨道交通具有运能大、速度快、安全准时、成本低、节约能源、能缓解地面交通拥挤和有利于环境保护等优点；第二，城市轨道交通的修建使城市结构的发展方向从单中心同心圆结构转向多中心轴线式结构。

London-considered a monocentric spatial form in European policy-has emerged as the most functionally polycentrie region studied.

此前的政策制定中，伦敦一直被认为是典型的单中心空间结构，研究发现，事实上它是一个功能强大的多中心区域。

The new representation proposed in this paper deals with the partitional clustering problem by regarding it as a multi-objective optimal problem; in this approach the niche Pareto genetic algorithm is used to solve the problem.

动态聚类算法从本质上讲是单目标组合优化算法，一般需要事先给定目标分类数和初始聚类中心，且初始聚类中心的选择对数据划分结果影响较大。

Key factors influencing urban agglomeration highway transport network system are sought out by using systematic structure model analysis method. Three hierarchies of urban agglomeration highway transport network are abstracted such as metropolitan district, inter city and external highway transport. Four kinds of structure morphology such as network of ringy and radial road surrounding one central city, decentralized network with multiple central cities, zonal and stretchy network, and combined network are studied out.

采用系统结构模型分析法寻找影响城市群公路交通网络系统的关键因素；提炼出城市群公路交通网络市域、城际、对外交通三个层次系统；拟定了单中心环放式、多中心分散式、带状伸长式、组合型四种城市群公路交通网络结构形态。

METHODS: A single oral dose 600 mg of 2 valaciclovir hydrochloride tablets was given to 18 healthy volunteers in an open randomized crossover study. The concentration of acyclovir in plasma was determined by HPLC at different time points within 14 h following administration. The pharmacokinetic parameters were calculated by BAPP 2.0 software and the bioequivalence was evaluated by two onesided t test and 90%confidence intervals.

采用双周期、单中心、开放、自身交叉对照的研究方法，18例健康志愿者随机分为两组，单次，交叉口服盐酸伐昔洛韦片600 mg后，以HPLC法测定血浆中阿昔洛韦的浓度，采用BAPP2.0软件进行数据处理，计算药代动力学参数。

This international, multicenter study, which was coordinated by Memorial Sloan Kettering Cancer Center, analyzed data from 705 women with contralateral breast cancer and a comparison group of 1,398 women with unilateral breast cancer.

这一国际多中心研究，是由纪念Sloan Kettering癌症中心的协调，分析了705对侧乳腺癌的妇女和单侧乳腺癌的妇女相比1398组数据。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。