查询词典 density of population

The results showed that, in the period from anthesis to dough stage, photosynthetic rate and photosynthesis yield and relative electron transport rate of flag leaves, light transmission rate of population were improved by low seeding density cultivation, change trend of them among different wheat varieties were the same.

结果表明，在从扬花到蜡熟期，稀植栽培可使小麦旗叶光合速率、光合量子产量、相对电子传递速率和群体透光率提高，各品种之间变化较为一致。

Thethesis compares the characters of ecosystem service in different district, main drainage basinand different segment in it, confirms the rules that the ecosystem service value is higher insouthern area than northern area and different characters along river and ridge. The ecosystemservice value is decreased regularly with the increasing of population density and elevationby compared analysis. The results of the ecosystem service values in 1981 and 2001 shows arule that ecosystem service value is steady for whole researched region and fluctuate in localarea in LRGR.

本文对比了各行政区、主要流域以及流域内部不同区段的生态系统服务功能特点，确定纵向岭谷区生态系统服务功能价值存在着南高北低的空间分布规律，且在河流、山脊处有着不同的变化特点；通过分析不同人口密度和海拔梯度下生态系统服务功能的价值，得出生态系统服务功能价值有随人口密度和海拔升高而下降的规律；通过对比81年与2001年生态系统服务功能价值的变化，阐述了纵向岭谷区生态系统服务功能价值总体稳定、局部变化的规律。

The results showed that the population density of Kyang was significantly lower within the area of 0-500 m than of 1 001-3 000 m from QTH, indicating the shyness of Kyang to the highway. QTH also had definite disturbance on the activities of Tibetan antelope and Tibetan gazelle. Especially for Tibetan antelope, its moving, feeding and alert behaviors had a significant difference between the areas of 0-500 m and of 〉 2000 m from QTH.

结果表明：藏野驴对青藏公路形成了回避，其在距路基1 001～2 000和2 001～3 000 m区域内的种群密度显著高于0～500 m的区域（P＜0.05）；青藏公路对藏羚羊、藏原羚的行为活动产生了一定程度的干扰，尤其是对藏羚羊，其在距路基0～500 m区域内的行为活动与距路基2000 m之外的区域具有极显著差异（P＜0.01）。

Studies on compensationary growth of invasive plants, which are subjected to different intensities of leaf-eating, in different levels of soil fertility are very important for us to determine the suitable density of its natural enemy population.

研究不同土壤肥力条件下入侵植物的叶片被不同强度地取食后所表现出的补偿性生长将有助于确定适宜的天敌投放密度。

On the basis of above studies, the thesis forecasts rural highway total scale using land quotiety method, the synthesizing-quotiety method, the population density of economic method and connectedness method. Through the forecasted mileages open to traffic, it gains county and village network scale of Henan province, and then forecasts the total scale of county and village highway network and the grade frame of every town or city in Henan province.

在上述研究的基础上，本论文采用国土系数法、综合系数法、人口经济密度法、连通度法对河南省公路网总规模进行了预测，并通过对河南省公路网通车里程的预测，得到河南省县乡道和村道的公路网规模，进而预测了河南省各市的县乡道和村道的规模，同时对河南省县乡道和村道公路网的等级结构进行了预测。

Comparative study on two levels of population and modules of mutualspecies in the two stations demonstrates that feature index tend to diminish suchas height,tussock amplitude,size,number,density and dry weight;and thegrowth analysis index incline to increase such as RGR、ULA、chlorophyllcontent and effectiveness of plant multi-leaves of the populations and DULA、DUMR、DAGA and DRGRa of the modules;and the dynamic curves of thepopulations and the modules also tend to steadily increase along with thetemperature ascending,heat accumulation and combination between water andheat in moderate-temperature steppe from fierce fluctuation alongside naturalprecipitation in warm-temperature steppe,illustrating that the transformabletendency from increasing the numbers of tussocks and tillers in order to expandthe resource range to seize in warm-temperature steppe to steadily improve drymatter production function of the populations and the modules in moderate-temperature steppe.

两个不同热量型研究站点共有种种群与构件两个水平的比较研究表明：随纬度增加和气温降低，种群与构件高度、丛幅、大小、数量、密度和干重等特征指标趋于降低和减少，而种群RGR、ULA、叶绿素含量和植物多叶性与构件DULA、DUMR、DRGR和DRGRa等生长指标则趋于增加，种群与构件的生长动态曲线也从随天然降水而剧烈波动趋向于随气温升高、热量积累和水热配置状况而稳定增长，说明各共有种从暖温型草原区增加植物种群与构件的大小和数量以扩充资源利用范围向中温型草原稳定地提高种群与构件的干物质生产性能的方面转变的趋势；同时，物质与能量的分配也从较多地投资于繁殖器官产生大量后代以适应未来降水的不可预期变化趋向于同化系统的构建和干物质生产效能的提高以抵御低温和干旱对物种生存的威胁，充分显示出不同温度条件及其水热组合对植物种群形态结构和生长繁育模式的显著影响及其响应特征。

The results show the following meanings. First of all, the population density of plateau pikas reaches maximum in September and decreases minimum in May at research site during the research period.

研究结果表明，研究期间高原鼠兔种群密度在每年9月达到最大值，每年5月种群密度最小。

An explicit analytical solution of the threshold pump power of the laser has been derived based on rate equations which contain the attenuation coefficients of the pump and laser radiations as well as the major contribution of the re-emission of the upper level atoms to the pump wave by using the analytical solutions. An analytical solution of the minimum fiber length required for the onset of the oscillation is presented. In addition, the analytical solutions describing the variations of the density of the pump radiation and upper laser level population along the fiber length have also been given.

从速率方程组出发，在不忽略光纤损耗系数和保留再发射项主导部分的近似条件下推导出了双包层光纤激光器阈值泵浦功率的显函数解析表达式，得到了光纤激光器产生振荡所需的最小光纤长度的显函数解析解；还给出了泵浦光子数密度和上能级粒子数密度沿光纤方向随光纤长度变化的显函数解析解。

The population density of that country is 685 per square mile.

那个国家的人口密度为每平方英里685人。

5 The average population density of the world is 47 persons per square mile.

第一句&世界人口的平均密度为每平方英里47人&不是主题句，因为8 Tt t 8。

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