查询词典 constructing

Second, proceeding with the fact thatthe constructing vector wave functions of conventional circular cylindrical and sphericalvector wave functions are linear independent solutions to the electromagnetic field waveequations in biisotropic medium,spectral impedance boundary conditions are proposed forinfinitely long perfectly conducting circular cylinder and sphere coated with biisotropic media,respectively,which generalize the applicable range of planar structures and are suitable toanalyze the electromagnetic problems involving their counterpart structures.

所用的方法是在Fourier变换谱域中的一阶线性微分方程组理论和矩阵技术，提出了适用于Chiral媒质半空间辐射问题的耦合镜像原理(即镜像电流的振幅和相位是由Chiral媒质中的本征左、右旋圆极化波相互耦合来确定的)和适用于研究平面分层Chiral媒质电磁问题的一般性更高的分析方法。

1Niche construction can lead to stable coexistence of diverse genotypes in spatially structured population, which supports a stable polymorphism even without heterozygote superiority.(2)With habitat deterioration, niche construction accelerates the formation of steady polymorphism and hence impedes the harmful influences of environment on the population, which might embody a life-history strategy of organism under the unfavorable environment.(3)Niche construction results in the coexistence with alternative polymorphism through genotype-environment feedback and limited gene flow.(4)The niche-constructing organism is an active force to alter its environment and hence the direction of natural selection in order to better survival.(5)Spatial dynamics and distribution pattern of metapopulation are profoundly influenced by time-lagged niche construction.(6)Metapopulation size can reach a fixed level in the recency effect and equal weighting of time lag but is statistical stability in primacy effect, which implies the primacy effect is most remarkable.(7)The increment in the relative weightingof each generation\' niche construction and the length of time lag are significant factors for system destabilization.(8)Moderate capacity of positive niche construction benefits the metapopulation persistence.(9)The narrowing of niche breadth can decrease the metapopulation size and thereby increase the extinction risk.(10)The coupled function of time lag and niche construction make the system oscillation and generate the spiral wave, spiral-broken and circular wave in heterogeneous habitat.The spatial distributions of metapopulation and resource content are complementary due to a phase lag of their both frequencies.(12)Metapopulation persistence with niche construction depends not only on the balance between colonization and extinction, but also on the balance between the ability of niche construction and natural dissipation of habitat.(13)Metapopula-tion can survive under certain condition when the percent of suitable patches in habitat is lower than the ration of extinction to colonization.(14)Two thresholds exist in the process of transition of habitat quality dynamics from unsuitable to suitable, which include the intensity of niche construction and the initial condition of system.(15)Metapopulation size is positive correlated with the ability of positive niche construction, which means that organism or population who has strongly positive influences on their environment plays an important role to maintain the available habitat.

通过上述几个方面的研究，主要得出以下15条结论：(1)生态位构建可使空间结构种群，甚至是在没有杂合子优势的条件下，形成多种可能的稳定基因型分布模式；(2)随着环境的破坏与恶化，种群的生态位构建作用加速其较早形成稳定多态以阻碍环境对种群的不利影响，解释了有机体在不利环境下的一种生活史对策；(3)生态位构建作用通过基因型—环境反馈机制及有限的基因交流导致基因型多态的稳定共存；(4)有机体的生态位构建作用是一种积极的动力改变环境进而改变其自然选择的方向；(5)生态位构建的时滞作用对集合种群动态和空间分布产生深刻影响；(6)集合种群大小在时滞的崭新效应和等权重效应下达到一固定值，而在首位效应下达到统计稳定，表明首位效应的影响最显著；(7)首位效应下生态位构建相对权重的增量和时滞的长度是影响系统不稳定性动态的关键因素；(8)适中的生态位构建强度有利于集合种群的续存；(9)生态位宽度变窄会减少集合种群的数量从而增加其灭绝风险；(10)时滞和生态位构建的双重作用使系统产生周期振荡，并在异质性环境中产生稳定的螺旋波，破碎的螺旋波和环形波三种分布模式；(11)集合种群与资源含量的空间分布因为相滞而互补；(12)具有生态位构建的集合种群续存不仅取决于侵占率与灭绝率之间的平衡，而且依赖于生态位构建能力同其生境的自然消耗速率之间的妥协；(13)当生境中适合侵占的斑块比例小于其侵占率与灭绝率之比时，生态位构建作用促使集合种群在一定条件下续存：(14)生境斑块的状态从不适合到适合转变过程中存在生态位构建强度和系统初始条件这两个阈值；(15)集合种群的大小同正生态位构建能力正相关，意味着对环境具有较强正作用的有机体对维持有效生境起积极作用。

Distinct position and clear format of radio station could help audiences with constructing the brand image. 6 They don't put enough attention to the promotion of organizational mission, the management of brand contacts, and the SWOT analysis on business planning.

另外本研究同时发现清楚的电台定位和节目风格呈现有助於电台建构听众对电台的品牌形象，而国内广播电台对於电台企业任务的推广和品牌接触点的管理以及企划时使用SWOT的分析皆不够重视。

Clear-cutting large areas of forest at once and constructing steep switchback roads to harvest the timber have resulted in erosion and stream habitat destruction.

为了木材而大面积彻底砍伐森林以及修建陡峭的山路造成了水土流失和河流生态系统的破坏。

I appreciate your time, skills, and effort in constructing the clearest tutorial I've ever seen.

我很欣赏你的时间，技能和努力，在建设最明显的补习我从未见过。

Presently, our country is constructing the socialism harmonious society, but between the marriage ties and the social harmony have the close relation.

当前，我国正在建设社会主义和谐社会，而婚姻关系与社会和谐之间存在着密切的联系。

Furthermore, this dissertation verifies the stability of the closed-loop system under this control scheme by constructing an appropriate Lyapunov function.

此外，本文还通过构建一个恰当的Lyapunov函数，验证了在这一控制方案作用下闭环系统的渐近稳定性。

The process of constructing the discourse of professionalism is constituted by three micro-mechanisms, the mutual influences of the formal and informal fields of gaining professional fame, the exercises of power via both coercion and co-optation, and the dynamics of interactions at three levels: organization, profession, and media system.

专业主义的话语建构的过程包括正式与非正式成名场域的区分和相互渗透，以强制和"收编"两个相辅相成的方式形成的权力行使，以及组织、行业和体制内外的互动。

Along with the constructing of large or even giant hydro-junction, cofferdam has likewise enlarged the scale and has become difficult to build .

随着大型和巨型水利枢纽工程的兴建，围堰的规模不断增大，施工难度也随之增加。

The author analyzed the new characters of agriculture and rural development at the new stage of constructing overall well-off socialist modern society, studied the concepts, system, methods of agriculture extension under the circumstance of joining WTO, agriculture structure adjustment and new sci-tech revolution, proposed that we should be geared to the needs of market and farmer, and clearly define the function of government, enterprises, association and society, and cogitate and reform our extension system in the view point of whole world.

分析了我国进入全面建设小康社会和加快社会主义现代化建设新阶段农业、农村发展的新特点，对我国加入WTO，农业产业结构战略性调整，面临新的农业科技革命等新形势下，农业推广理念、制度、方式、方法等如何变革进行了剖析，提出要面向市场和农民，自下而上开展推广工作，明确划分政府、企业、社会组织各自的职能，用世界的眼光来认识和改革我国的农业推广。

The dynamic variation in content of cndogenous abscisic acid,indoleacetic acid,gibberellinsand isopentenyladenodines of normal juvenilefruit and dropped fruit was measured with enzyme linked immunosorbent assayin the course of physiological fruit drop of 'Shuizhang Longan.

应用酶联免疫法测定了水涨龙眼生理落果期间正常幼果和脱落幼果中内源激素ABA、IAA、GAs及iPAs含量的变化。

Zillions of code examples on the web.

网上数量巨大的代码例程。