查询词典 population

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

Based on the established quantitative population density - land use model, the spatialization of population census data in Sichuan in 1999 was carried out.

根据这一关系对四川省1999年的市县人口统计数据进行空间化，用罗江县的实际乡镇人口数据对空间化结果进行检验。

Historically, extensive hydrologic connectivity among populations might have facilitated long-distance gene flow and resulted in the pattern of genetic variation revealed in this study, and also played great roles in population dynamics and population persistence of V. spinulosa in this region.

长江中下游湖泊与长江干流历史上高的连通性对刺苦草在这一区域的遗传多样性水平和遗传结构形成起了重要的作用；同时，历史上的江湖一体化格局也促进了刺苦草在这一区域的种群扩散和维持。

Taimen is an important local wild commercial fishery species in Heilongjiang River. Due to severe damages to its population size, habitats, and spawning fields from overexploitation and environmental pollution. It is enlisted as an endangered species in the "China Red Data Book". To establish a scientific basis to conserve taimen, studies on the population genetic structure and phylogeography are necessary.

哲罗鲑是我国土著的重要经济鱼类，近些年来，由于环境的恶化及人类活动的加剧，已对其资源量、栖息地、产卵场等造成了严重的破坏，种群处于濒危状态，被列入濒危物种红色名录中，因此研究哲罗鲑的群体遗传结构、演化历史、分布动态等对其进行有效保护具有重要意义。

Anna: No, I've got a hangover.

不是，我昨晚宿醉了。

We head into the mountains in Su's new Land Cruiser, stop for lunch at a scenic restaurant and then hang around drinking beer and eating fruit as two of his employees attempt to lure the birds with a tape recording of the fowl's mating call.

我们坐上苏的巡逻车向山顶出发，在一家风景优美的餐馆吃了中饭。然后我们喝着啤酒吃着水果四处逛。