geographical variation is one of the most striking features of the condition - it is most common in northern countries such as canada and scandinavia and lowest in countries near the equator.
but it is hard to be optimistic about this particular recovery. geographical variation is partly to blame.
不过就此也难以让人完全高兴起来,部分原因在于触目的地域差异。
it was found that there were some correlations between the patternsof geographical variation in characters of the species and latitude.
研究发现,该种某些性状的地理变异模式与地理纬度之间存在相关性。
the test has also investigated the geographical variation regularity of morphological characters of pinus oocarpa and the relations between them.
本试验还对卵果松形态特征的地理变异规律及其相互间的关系进行了初步探讨。
the analysis has shown that the geographical variation trend of phenotypic traits has given priority to longitude, and no obvious variation in latitude and altitude.
分析结果表明,麻竹表型性状的地理变异趋势是以经向变异为主,纬向与垂直变异不明显。
the phenotype diversity was rich, and the variation of morphological characteristics among populations followed certain geographical variation pattern.