查询词典 population

Seven Brachionus species in Lake Jinghu were found, of which Brachionus calycflorus, B. angularis, B.diversicornis and B.forficula were determined as common species due to their higher population densities and occurrence frequency. The population density of both B.calyciflorus and B. angularis reached the peak in February and March and decreased rapidly after April, while that of both B. diversicornis and B. forficula remained high during June-September and decreased sharply after October.

结果表明，镜湖常见的7种臂尾轮虫中，仅萼花臂尾轮虫、角突臂尾轮虫(B.angularis)、裂足臂尾轮虫(B.diversicornis)和剪形臂尾轮虫(B.forficula)的种群密度和出现频率较高；前两者种群密度高峰期均出现在2~3月份，4月份后均较低；后两者种群密度在6~9月份较高，而在10月份后很快下降。

Ramet population density, ratio of root to shoot and ramet population spatial pattern of Fragaria vesca varied along the elevation gradient in the transitional zone between Qinghai-Tibet plateau and Sichuan basin.

本文通过两个野外调查实验，研究在不同光照条件下聚花过路黄的克隆构型以及分株种群特征和野草莓分株种群特征随海拔梯度的变化。

Two field investigations were conducted to study clonal architecture and ramet population characteristics of Lysimachia congestiflora growing in different light conditions and the variation of Fragaria vesca ramet population characteristics along the elevation gradient in the transitional zone between Qinghai-Tibet plateau and Sichuan basin.

本文以青藏高原与四川盆地过渡带四种匍匐茎草本克隆植物为对象，应用野外调查和实验生态学方法研究克隆植物对异质性环境的适应对策以及克隆整合、克隆内分工行为对克隆植物在不同海拔生境中生长的贡献。

Twelve strains and a representative farmed population of Hizikia fusiformis were sampled from its principal cultivation ground, i.e. Dongtou county, Zhejiang province. Important characteristics of these strains were compared and genetic diversity of the population was analyzed using AFLP technique.

对中国羊栖菜主产区浙江省洞头县的12个羊栖菜养殖品系的重要形态特征进行了比较研究，并利用AFLP技术对一个典型养殖种群的遗传多样性进行了分析。

LIMITATIONS: Study population may not be generalizable to the general population.

限制：研究人群可能无法代表一般人群。

In this present study, we constructed a F_2 segregating population containing 1599 individuals using upland cotton genetic standard line TM-1 and sea island glandless mutant line Hai-1 as parents. Thereafter, Gl_2~e gene was finely mapped via this population.

本研究利用陆地棉遗传标准系TM-1和海岛棉无腺体突变品系海1构建的1599个F_2单株，对无腺体突变基因Gl_2~e进行了精细定位。

Consider two species from the genera Brassica and the genera Gossypium, respectively. We use a simulation method to study the stochastic model for modelling the competition between hybrid population and wild relative population in a natural environment.

考虑两个分别来自芸薹属和棉属的物种，用电脑模拟的方法去探讨随机式模型，即在自然环境之下杂交种与野生亲缘种之间的竞争。

The haplotype diversity index of Yangtze River population and Pearl River population was 0.5263 and 0.6104, respectively.

长江群体和珠江群体的单倍型多样性指数分别为0.5263和0.6104，核苷酸多样性指数分别为0.144%和0.192%。

Vallisneria spinulosa maintained high levels of genetic variation both at the species and at the population level. Partitioning of genetic diversity revealed a surprisingly low population differentiation as compared to other hydrophilous angiosperms.

利用等位酶和开发的微卫星标记研究了刺苦草在长江中下流域的遗传多样性和遗传结构，研究结果表明，刺苦草在居群水平和种水平都具有高的遗传多样性；居群间遗传分化程度非常小；居群间历史上存在长距离基因流。

Results:(1) The mean BMI of patients except for women aged from 20 to 29 years, was much higher than that of the general population (P.01).(2) The overweight (BMI≥24) ratio of the patients was much higher than that of the general population (P.01).(3) Patients with hypernormal BMI were more than those with normal BMI (BMI4) except for patients aged from 20 to 29 years.(4) Patients with hypernormal BMI were significantly more than those with normal body weight in all other occupations except for young students.

结果：①除了女性20岁～29岁年龄段外，其余各组患者体重指数的均数均明显大于中国普通人群体重指数的均数（P均＜0.01）；②本组患者中男、女性体重指数超常者(BMI≥24)所占的比重，均明显大于中国普通人群中体重指数超常者所占的比重（P均＜0.01）；③除了男、女20岁～29岁年龄段以外，其余各年龄段的患者中体重指数超常者所占的比重，明显大于体重指数正常者(BMI4)所占的比重；④除青年学生外，其他职业中体重指数超常者所占的比重，明显超过体重指数正常者所占的比重。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。