查询词典 decrease in population

Continuous flow experiment was carried out using acidogenic-desulfate bioreactor and it is suggested that on quality,SRBis the hydrogen consumer and the remaker of the end products of AB;and maintains the typical characteristic of"acetate-type" metabolism of its population. On quantity, SRB maintains dynamic balance between"substrate chain"and"bio-chain",describing the dynamic of its population.

摘 要：采用产酸脱硫反应器进行连续流试验，提出在&质&的方面，SRB是产酸脱硫生态系统中氢的&消费者&和产酸菌酸性末端产物的&改造者&，并维持着群落&乙酸型代谢&的典型特征；在&量&的方面，SRB种群通过数量波动维持着&基质链&与&生物链&的动态平衡，并以种群动态为表征。

Results (1) From more than 100 primers, 11 primers producing polymorphism and reproduceable bands were selected, 129 bands were amplified.(2) The percentage of polymorphic bands within different populations were 20.9%-55.0%.(3) The cluster map including all samples were obtained by UPGMA. In the map, there were six cluster groups and three individuals outside the groups. The branch with five samples of Zhongjiang Sichuan population were far from other samples in genetic distance.(4) According to the distribution provinces five groups were divided in genetic variance analysis. Genetic variance 80.44% existing within population, 8.29% among populations and 11.27% among groups.

结果 （1）从100多个引物中选择出11个多态性强和重复性好的引物，扩增得到129条带；（2）不同居群内多态位点比率为20.9%－55.0%；（3）用UPGMA法得到所有样本的聚类图，可分为6个主要分支组和3个组外个体，其中四川中江居群的5个样本聚为一组，并与其他样本遗传距离较大；（4）按产地分组，遗传差异的80.44%存在于居群内，8.29%来自于组内居群间，11.27%的遗传差异来自于组间。

Salar 22 of China's population of 10 million people in the population below the national one less.

撒拉族是我国22个人口在10万人以下的人口较少民族之一。

Based on the observation about the ramets characters of predominant clonal rhizome plants from wetland, their modular structure, reproductive allocation and population dynamics were measured and results indicate that:(1) There are 2 or 3 age classes of ramets and 3 types of tubers of Scirpus planiculmis population in terms of four times observation in three years.

对湿地优势根茎植物种群分株构件的年龄结构、构件性状、生殖分配及种群数量动态观测结果表明：(1)紧穗三棱草种群分株3年4次观测有2～3个龄级，球状根茎可划分为3个类型。

This paper put forward some basic conclusions after analyzing floating population's resident pattern in Shanghai.(1) When floating population migrate to city, they'll gradually sedimentate ,and finally 10% people will permanently settle down.

通过构造进入城市的流动人口同期群，我们比较流动人口的期初期末滞留率、分居留时间别滞留率、分人口群体的继续滞留率等，以此来说明流动人口在居留模式上所表现出的特点。

After extensive survey of species of Takakia, we couldn't have found any individuals because of its limited population distribution, so we decided to add some relevant studies of conservation genetics to make up for the shortage of this project, including the analysis of effect of stand age and management regime on genetic diversity on Thuidium cymbifolium in Western China, and genetic structure of the endangered insular plant Neolitsea sericea on the Zhoushan archipelago. Results showed that the population of T.

藻苔类植物多分布于高山雪域地带，且范围极为有限，课题组经多次野外搜寻，未能采集到活体材料，而课题实施时间仅有1年，因此课题组同时积极开展云杉人工林林下大羽藓遗传多样性恢复的动态变化，以及岛屿地理隔离对濒危物种舟山新木姜子种群遗传结构的影响等研究，以弥补项目实施之不足。

Serologic screening for celiac disease was positive in 12 (4.5%) of 266 patients with osteoporosis and in six (1.0%) of 574 patients without osteoporosis. All but two serologically positive individuals underwent intestinal biopsy, which was positive in nine osteoporotic patients and in one nonosteoporotic patient. The prevalence of celiac disease confirmed by biopsy was 3.4% among the osteoporotic population and 0.2% among the nonosteoporotic population.

腹腔性疾病血清筛选为阳性者中，有12位(4.5%)为骨质疏松者，另有6位(1.0%)为非骨质疏松者；除了其中的两位，其他的阳性反应患者皆进行了小肠的切片检查；结果显示，骨质疏松者中有9位为确定腹腔疾病病例，非骨质疏松者中则有1位；经过切片检查的确认，骨质疏松者的腹腔疾病流行度为3.4%，非骨质疏松者则为0.2%。

"Governmentsrely on apathy," Shirky said."Anything that makes a large section ofthe population start to care risks losing the apathy required for themto continue to govern. The real threat is when the population that ison the sidelines starts to side with the students."

&政府职能沉默&，Shirky 说：&任何让人口中已大部分人去担心失去沉默的权利，将要求他们继续统治，真正的威胁是处在边缘的人们站在学生一边。&

The effects of interspecific competition on the population dynamics of four insect grain Insecp pests (Sitophilus zeamais, Rhizopertha dominica, Tribolium castaneum and Cryptolestes ferrugineus) was studied at 30 ℃, 75％ relative humidity. A regression analysis of the population dynamics was conducted.

在30 ℃、75％相对湿度条件下研究种间竞争对玉米象、谷蠹、赤拟谷盗和锈赤扁谷盗4种主要储粮害虫种群动态的影响，并对种群动态进行回归分析。

Population distribution ; land use ; population census data ; spatialization

人口分布；土地利用；人口数据；空间化

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。