查询词典 dispersal

This has been assumed to be an adaptation for dispersal by insects, which are attracted to diseased plants and easily become covered with sticky spores if the fungus is sporulating.

这也许是为了适应于昆虫进行传播，因为真菌形成孢子时，可以把昆虫吸引到感病植物上，很容易地粘附上粘性孢子。

It is generally thought that the dynamic subsidence is associated with supercontinental assembly and dispersal and subducting slabs.

动力地形一般认为具有两种成因，一种为与超大陆集聚和分散有关的动力地形，另一种为与大洋板片俯冲有关的动力地形。

Fe2O3 acts as an activator more than a catalyst in the desulfurization reaction with lime. Fe2O3 acts as the "activation center" around which CaO particles are sulfurized. The new dispersal formation mode of product differs from the compact layer that used to be. And the pore structure of product layer on the surface of lime particles is optimized, which makes SO2 penetrate into core parts of lime more easily. As a result, the desulfurization reaction is developed deeper into the core parts of absorbent.

氧化铁所起的是改变石灰颗粒表层产物生成方式的活化作用，使反应生成物不会形成一个致密的外壳，而以氧化铁为活性中心进行硫化反应，形成了分散的硫酸钙产物堆积，改善了硫化过程中的表面孔隙结构，减少了石灰颗粒表面硫化产物层对反应气体向石灰颗粒内部扩散的阻力。

Fe2O3 acts as an activator more than a catalyst in the desulfurization reaction with lime. Fe2O3 acts as the "activation center" around which CaO particles are sulfurized. The new dispersal formation mode of product differs from the compact layer that used to be. And the pore structure of product layer on the surface of lime particles is optimized, which makes SO2 penetrate into core parts of lime more easily. As a result, the desulfurization reaction is developed deeper into the core parts of absorbent.

氧化铁所起的是改变石灰颗粒表层產物生成方式的活化作用，使反应生成物不会形成一个致密的外壳，而以氧化铁为活性中心进行硫化反应，形成了分散的硫酸钙產物堆积，改善了硫化过程中的表面孔隙结构，减少了石灰颗粒表面硫化產物层对反应气体向石灰颗粒內部扩散的阻力。

To make a comprehensive view of metapopulation researches, we folly analyze and summarize the present concepts, theories and models of metapopulation in this paper, which primarily includes the dynamical models and simulation approaches of single and competitive metapopulations. Based on the Levin's patch occupant model, the center framework of metapopulation researches, primary principles and mechanisms are discussed. First, Levins rule: the fraction of empty patch will remain constant with habitat destruction as long as metapopulation survives. This rule implies that empty patches have determinant effects on persistence and conservation. Second. Allee effect of metapopulation is incurred by establishing difficulties and dispersal costs, which is important to the studies of reserve area and the minimum available metapopulation size. Third, we analyze the rescue effect that immigrants can reduce the extinction risk of the presented local population. Rescue effect can leads to the improvement of metapopulation sustainability and the decrease of fraction of empty patches. Fourth, the coexistence mechanism of two competing metapopulation is discussed, which suggests that competition-colonization trade off may be prevalent in competing systems. Finally, extinction debt ob tamed from coexistence mechanism is given, which depicts the lost of species richness in the future for the current habitat destruction. After theoretical discussion, we present two popular simulated approaches in metapopulations: probability transition model and stochastic process model.

为了能总观集合种群进展的全局并开展进一步的工作，首先对集合种群的已有概念、理论和模型做了全面的分析和总结；其次对集合种群的发展和概念进行了探讨，以集合种群模型的中心框架：Levins的斑块占据模型为基础，展开对其它原理、效应和机制的探讨；主要包括了Levins原理，即当生境进到破坏时，空斑块比例在集合种群灭绝前保持不变，然后还分析了Allee效应（集合种群的Allee效应主要是由于建群困难和扩散损失造成的）；第三，分析了援救效应：迁人个体可以降低斑块中现有局域种群的灭绝风险，援救效应会增强集合种群的生存力，使空斑块比例下降第四，探讨了两竞争集合种群的共存机制，即竞争－侵占妥协，其共存机制为空间生境中物种共存提供了有力的理论解释。

The establishment of polyploids is favored by differential niche preference, low dispersal, a selfing or asexual mating system, high fecundity , and a perennial life history .

对不同生态位的偏好，低分散，一个自交或无性交配系统，繁殖力高和多年的生活史都有利于多倍体的建立。

During a nuclear accident, all the highways railways and seaways that cross through the exclusion zone must be blockaded immediately in order to control the nuclear accident and dispersal.

核子事故发生时，对於通过禁建区之公路、铁路或水路得随时封锁，以便专供处理核子事故及疏散之用外，并应立即通知当地治安机关。

However, the dispersal locality and distance of different marine species is not clear, we are targeting on the genetic connectivity of several taxa of marine organisms around Taiwan, South China Sea, and East China Seaboards.

但是由於目前尚未清楚得知不同物种扩散位置与距离为何，因此目前进行之研究以不同扩散能力之物种在台湾，南海，东海和西太平洋诸岛海域之遗传连通性。

The results show that the spherical nanoparticles of zinc sulphide with fine dispersal and with average particles size of 12nm are synthesized in the wide temperature range of 120~200℃, depending on the urea as mineralizers.

结果表明，采用尿素作为矿化剂，在较宽温度范围(120~200℃)内均能制备出分散良好、平均粒径为12nm的球形ZnS纳米粒子。

Herbicide resistance bar gene was used as selectable marker to test the pollen dispersal.

利用除草剂抗性基因bar作为标记基因检测花粉飘逸。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷