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But there are few studies on mixing and advection of pollutant in wave environment with turbulence model.

利用二维模型研究了波浪和波流环境中的扩散系数,利用二维和三维模型模拟分析了不同流场环境中射流流场和浓度场的分布。

The flow of chloride ions in the concrete of dry-wet cycling region is the combining of diffusion and advection.

在干湿交替区域混凝土中氯离子的输运属于在孔隙非饱和状态下离子浓度扩散和对流耦合的渗透。

The objective is achieved after the development of simulation model using one dimensional advection dispersion equation.

这样 ,一维对流—扩散水质方程的求解除就是实现本研究目的的关键。

Finally, a numerical experiment was presented to discuss the effect of advection and nonlinear bottom stress to the warm water diffusion.

最后,利用数值试验,文章探讨了非线性底摩擦及平流项对温排水扩散的影响。

Phenotypic plasticity and genetic differentiation are the two major strategies that alien invasive plants can adapt habitat heterogeneity.The polymorphism of invasive plants and the diversity of their dispersal way enable them occupying invaded habitat quickly,and dispersing with a far range.The breeding strategies that agamogenesis and amphigenesis can coexist and trade off according to the habitat and invasive stage can not only promote the invasive population erupted massively,but also directly affect the dispersal mechanism and regulate the genetic structure of the population.

表型可塑性和遗传分化是外来入侵植物对生境异质性的两种适应策略;散布体多态型和散布途径多种化,使外来入侵植物迅速占领入侵生境,并进行远距离扩散;无性生殖和有性生殖并存,并根据生境和入侵阶段权衡的繁育对策不仅使入侵种群大面积暴发成为可能,而且直接影响散布机制并对种群遗传结构具有调节作用。

Results indicated that aphids fed on fresh bamboos by aggregately distributing, and their predators in bamboo forests were separately collected in different parts, main of which were in accord with negative binomial distribution and Polya-Eggenberger distribution, it was proved that some natural enemies in some sample sites were spraying extensively from single plot to around places, the population density of bamboo aphids was proved to be stable in a regular time.

在竹林中主要符合负二项式分布和 P-E 核心分布,为不均匀的聚集分布,存在由点片向四周扩散的现象,频次分析和聚集度指标的分析结果基本一致,其中瓢虫的聚集程度不及另外2种天敌的明显。

Eurocontrol, an umbrella agency that coordinates air traffic across 38 European countries, said authorities will use satellite images to decide whether to open airspace, and rely less on computer models that indicated the ash cloud had spread over much of Europe.

负责协调38个欧洲国家空中交通的保护组织欧洲航空安全组织称,当局将利用卫星图像决定是否开放领空,并减少对计算机模型的依赖。计算机模型显示烟尘已扩散至大部分欧洲地区。

Based on the applied situation of deploying the air jamming corridor, the formation scenario and diffusion model of the chaff curtain wall is established, and the related parameters, length, width, thickness, drift velocity, bulk density, and tropism of the chaff, are described quantificationally.

在此基础上,依据布撒空中干扰走廊的应用实况,给出了箔条幕墙的生成想定与扩散模型,并对幕墙的长度、宽度、厚度、漂移速度、体密度及幕内箔条取向予以定量描述。

According to the influence of air pollutant source parameters, weather factors, approach underlying surface layer and non-linearity reaction, the correction coefficient is to modify final simulate value, which perfectly resolves the problem of the result probability and complexity actually. Therefore, the result of the model is more reliable.(2) Long-term monitoring average concentration isoline map and simulating air pollutant concentration isoline map are drawn by drawing function of surfer 8.0 software.

本研究提出的长期平均浓度模型的预测值与实测值的相关系数r=0.813在α=0.05下通过检验,且验证的样本量大,计算结果具有代表性,为湛江市郊区环境空气质量全面预测和污染防治提供理论依据,该模型亦可进而推广应用于SO_2、NO_x、CO等大气污染物的扩散状态研究和计算。

The C12 Zagato has an aluminium body with stainless steel roof rails and has many F1 derived design details such as an F1 nose, air scoop, chimneys, mirrors, rain light, fuel flap and diffuser.

利用C12 Zagato车型有一个不锈钢的车顶铝合金车体上,并如F1鼻子,进气口很多F1设计的细节,烟囱,镜子,雨灯,油箱盖和扩散

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I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。