查询词典 dispersal

The mesocarp may be protective or aid in dispersal.

中果皮可能起保护作用。

The patterns of dominant species alongside Wanjiazhai Yellow River Diversion Project in Shanxi were studied by using dispersal index, clump intensity, mean crowding, Green's index, intensity index and x^2 test for goodness-of-fit to negative binomial distribution.

应用扩散系数、聚集指数、平均拥挤度、Green指数、聚集强度和负二项分布的x^2拟合检验等方法，研究了山西万家寨引黄工程优势种群的分布格局，并阐述了各指数间的关系。

Dispersal, in contrast, is a nondirectional movement away from the birth or breeding site.

相反，扩散是离开出生或繁殖地的非方向性运动。

Using the time series analysis and numerical simulation, we analyze the influence of colored noise and dispersal on synchrony between population dynamics, and the complex interaction between the two synchronizing factors.

运用时间序列分析和数值模拟的方法，分析了有色噪音和扩散对种群同步性的影响，以及这二者间的复杂相互作用。

The investigation has shown that the fuel dispersal process can be divided into the acceleration stage,the deceleration stage and the onflow stage.

研究结果表明，燃料抛散过程可以分为加速运动阶段、减速运动阶段和湍流运动阶段。

When there was only one pollen donor, gene flow frequency was in direct proportion to the pollen density.(8) The strong pollen competition from self-pollination might contribute to the very low outcrossing rates and gene flow frequencies in rice varieties.(9) The study of rice pollen flow showed that with the artificial disturbance of pollen dispersal there were pollen grains detected at 90 m from the pollen sources.

9对水稻花粉流的研究显示，在赶粉的实验条件下，于远离花粉源的90 m处仍然检测到花粉分布，回归分析显示水稻的花粉可以传播100 m以上，甚至在远离花粉源的200 m的距离处仍然可能有花粉分布，这表明水稻的花粉可以传播非常远的距离。

The generic distributions in both modern and fossil times were outlined, and their distribution center, place and time of origin and the way of dispersal were discussed. An attempt was made to discuss early differentiation, geographical radiation and morphological evolution of the family on the background of paleogeography and paleoclimatology, tracing back as far as the Late Cretaceous and Early Tertiary.

作者试图回到遥远的晚白垩纪和旱第三纪，从描绘桦木科植物起源和早期分化的古地理和古气候背景入手，分析了在这种背景下桦木科植物所发生的空间辐射以及植物体本身所产生的形态进化，以求得对桦木科植物起源、散布和分化作出比较合理的解释。

The seeds often furnished with apical pappus, can act as parachutes for wind-dispersal. Other achene with bristles can attach on animals for travel.

利用降落伞状的冠毛，可以藉由风力传播；长有勾刺的瘦果，则可附在动物身上传播到其它地方。

The distribution pattern of ten Tsuga tchekiangensis populations in the Mang Mountain were analyzed by the variance/mean ratio method,and their aggregated intensities were were measured by using the following indices:negative binomial parameter,dispersal index,clumping index,crowing mean index and patchiness index.

采用方差/均值比率法对10个南方铁杉种群的分布格局类型进行了分析，同时，采用负二项式参数、扩散性指数、丛生指数、平均拥挤度指数和聚块性指数计测这些种群的空间聚集强度。

We studied its distribution pattem by using the following measures f the test for fitting to the poisson , negative binomial and neyman a distribution . at the same time , we use negative binomial parametef , dispersal index , patchiness index , cassie s index and clumping index , estimated the aggregation intensity . the results showed that the distribution pattern is typically aggregated , and the intensity of aggregation vari

经统计分析，青岛百合复合种群、各局部种群内个体的分布格局离散分布拟合的结果符合负二项分布；各聚集强度参数中，丛生指标）和 cassie 指标均大于o ，负h项参数限）均较小，扩散系数k卜扩散型指数）和聚块性指标均大于1 ，以上这些表明各个局部种群的分布格局都为聚集分布。

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