查询词典 density of population

Average net income per capita, average area of farm—land per capita, irrigation-well density, irrigable land scale, natural growth rate of population, distance to city or market, and farmland quantity are the driving factors.

研究表明，土地质量群因子、经济区位群因子和人口压力群因子是其驱动因子，在此基础上，建立了曲周县土地利用程度驱动因子的多元线性回归模型。

The study on spatial distribution of the density of longevous people of Rugao County, Jiangsu Province, shows that the over-90 rate (number of people over 90 years old per 100000 in population) is high in some areas.

对江苏省如皋市长寿人口的空间分布研究表明，如皋市90岁以上长寿人口比率的空间分布具有地域聚集特徵，比率较高的区域分布在北部－东部－东南部发育较强的壤质雏形土和人为土上，在中西部的砂质雏形土和南部弱发育的年轻壤质－粘质雏形土上，比例较低。

The results indicated that in the mountainous areas of south and west Anhui, there were 46 and 37 species of nectariferous plants, and the distribution density of Apis cerena cerena population was 2.01 and 1.95 colony·km~-2 , respectively.

皖南山区和皖西大别山区蜜粉源植物分别为46和37种，中华蜜蜂群体数量多，分布密度分别为2·01和1·95群·km-2；江淮地区和淮北平原蜜粉源植物分别为17和12种，花期短而集中，且面积大，适宜于意大利蜜蜂采集与生产，中华蜜蜂群体数量少，分布密度分别为0·06和0·02群·km-2。胡蜂捕食影响蜜蜂种群消长与分布。

It was observed that although the pSym-curred strain HND29SR could not nodulate on the host plant Heinong 33, there was no difference in the root colonization dynamics and density of rhizobium population between HND29SR and its wild-type HN01 or reference strain HN01L in sterilized pot-sand system.

这一现象说明HN01所含共生大质粒不影响其根圈定殖行为，有理由推测影响HN01根圈定殖行为的有关基因可能存在于染色体上或另外两个内源质粒上。

So some people outside the industry began to think pessimistically, the impact of the SARS epidemic, the population density of more small units became the first victim.

因此，有些人以外的行业开始想悲观的影响， SARS疫情，人口密度更小的单位，成为第一个受害者。

Effects of different spacing form、density on structure of population、light distribution and yield of Phaseolus vulgaris were studied under the high yielding condition.

研究了在高产条件下，不同行距配置、密度对奶花芸豆群体田间小气候变化、冠层结构、光能分布与利用特性及产量构成的影响。

Morphological indices of aboveground and underground organs of Plantago virginica were determined using Leaf Area Analysis System (FOCTA STD 1200P) and Root Analysis System (RHIZO STD 1600+) to investigate the influence of population density on the root morphology of the plant.

应用叶面分析仪、根系分析仪对北美车前地上和地下部分形态进行了测定，考察北美车前种群密度对植株形态学参数的影响。

The influencing effects of grain production systems on the population of second generation of cotton bollworm in cotton were studied. The multi-harvest system provided cotton a good protection against cotton bollworm due to the corn plants in this system strongly attracted cotton bollworm adults when they were ovipositing, therefore reduced the density of cotton bollworm in cotton, compared with ton-grain system..

转Bt基因抗虫棉对棉田节肢动物多样性的影响用吸虫器取样和捕虫网取样两种方法，研究了转基因抗虫棉和化学防治对棉田节肢动物多样性的影响，发现转Bt基因棉棉田与非转基因常规棉棉田棉花害虫、自然天敌和中性节肢动物亚群落没有显著差异，而化学防治可以使各亚群落的个体数量、物种数量、多样性指数发生剧烈变化。

With high quality cotton Yuma No. 1 (Gossipier Hirsutum. L) as the testing material, different combinations of population density, fertilizer and DPC chemical spraying were adopted to study the dynamic changes of endogenous hormone contents, the vigor of source-sink and the nutrient transportations from boll walls to lint cotton as well as fiber qualities on different positions.

本论文以高品质棉花渝棉一号为材料，通过密度、肥料和DPC化控等不同水平的调节，从不同部位棉铃的源库活性、内源激素、铃壳中养分运转、棉花品质等方面着手研究高品质棉花渝棉一号不同部位的棉铃发育及其调节机理。

Learn to calculate the real distance according to the scale;Learn to calculate the population density of Japan.

运用比例尺来计算两地之间的实地距离；计算日本的人口密度。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了