查询词典 populations

A transgressive segregation was observed in both populations.

在两种群体中都出现了分蘖角度的超亲分离。

Clearly, the decline in fish populations in Trias waters is the result of overfishing, not pollution.

显然，Tria水域鱼类数量的下降是过度捕鱼而不是污染造成的。

Currently many fish populations in Trias waters are declining, a situation blamed on pollution.

当前Tria水域的很多种鱼类数量都在下降，这种现象被认为是污染造成的。

Therefore, the best way to restore Trias fish populations and to protect all of Trias marine wildlife is to abandon our regulations and adopt those of Omni.

因此，回复Tria鱼类数量和保护Tria所有海洋野生动物的最好办法就是废止我们的规定而采用Omni的规定。

There are biological and ecological differences in different geographical populations and biotype of Trichogramma dendrolimi , moreover the differences might effect biological control efficiency.

松毛虫赤眼蜂不同地理种群、不同的生物型其生物学和生态学特性存在差异，在种群间及种群内可能存在有较大的遗传性变异，而这些差异显著影响生物防治的效果。

The mtDNA COI, mtDNA COⅡand mtDNA Cyt b genes of different Trichogramma species and different geographical populations of the same Trichogramma species were sequenced, and the genetic distance and phylogenetic relationships of Trichogramma were respectively established based mtDNA gene sequences.

本研究成功测得了多种赤眼蜂不同种和不同地理种群mtDNA（COI、 COⅡ和Cyt b ）的基因序列，对赤眼蜂mtDNA基因序列从遗传距离和系统进化树进行分析，结果表明3个基因序列均适合赤眼蜂种一级的分子鉴定，不能用做种下阶元的区分，同时确定mtDNA Cyt b 基因为赤眼蜂蜂种鉴定的理想基因序列。

The status and distribution of chimpanzee Pan troglodytes populations were investigated in the humid forest of southwestern Nigeria.

我们利用标准化调查和广泛调查两种方法对尼日利亚西南部森林中大猩猩的分布状态进行了调查。

During the study period, we found that plants were present only in natural creek banks, but not altered ones. Comparisons between natural banks without plants and altered banks revealed no significant difference in both shrimp abundance and distribution. However, there was significant difference in shrimp abundance when natural banks with plants and altered banks were compared, suggesting that construction might have negative effects on plants and, in turm, on shrimp abudance. Comparisons between reproductive and non-reproductive season yielded significant results in both shrimp abundance and distribution, which resulted from the recruitment of juveniles to local populations.

在实验期间，自然河段有水蕴草而整治河段没有水蕴草的存在，比较无水蕴草的自然河段与整治河段，发现无论是数量或出现率都没有显著差异，然而，在有水蕴草存在的自然河段之多齿新米虾数量与出现率则较整治河段高，显示哈盆溪可能因为整治工程影响了底质的型态，导致水蕴草不易生长，进而影响多齿新米虾的数量及出现率；在季节方面，结果显示，不同季节在数量和出现率上都有显著差异，而此差异是因为幼虾在生殖季大量加入族群所致。

Using uncontinued polycrylamide gel electrophoresis, comparative studies of isozymes between the four geographical populations of Tomicus piniperda L.

采用不连续聚丙烯酰胺凝胶电泳技术研究了纵坑切梢小蠹Tomicus piniperda L。

Examining population growth as an index of development, he concluded that in Europe, where countries doubled their populations every five hundred years, growth was steady if undramatic.

北美的人口每隔二十或二十五年就增加一倍，因此北美的劳动力不虞匮乏；此故，「新大陆」是「比较繁荣，而以更快的速度向富裕之道迈进。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。