查询词典 decrease in population

Winter,because of cold and food resource was shortage,animal to get more nutrition material andenergy,to adopt the changes of environment condition,to prolong alimentary canal andincrease food in alimentary canal detention time,to be able to absorb the nutrition materialdigestion countermeasure in food fully.As availability and nutrition were rich such as insummer and fall,however,shortening the length of alimentary canal,make food inalimentary canal current velocity accelerate,since make animal absorb in the season withabundant food the more nutrition material energy that is plenty of with accumulation.9adopt relative fatness,body chemical composition,kidney fatty index and marrow fattyindex 4 kinds of population nutrition condition assessment technique appraise as squirrelnutrition condition of population.

冬季，由于寒冷和食物资源匮缺，动物为了获取更多的营养物质和能量，采用延长消化道、增加食物在消化道内滞留时间，从而能充分吸收食物中的营养物质的消化对策，来适应外境环境条件的变化；在食物可利用性大、食物中营养物质较丰富的季节，则缩短消化道长度，使食物在消化道内的流速加快，从使动物在食物充裕的季节能摄取更多的营养物质和积累大量的能量。9采用肥满度、身体组成成分分析、肾脂肪指数和骨髓脂肪指数四种种群营养状况评价方法对松鼠种群的营养状况进行了评价。

This has slowed the city's forty-year population decline after losing nearly a quarter of its population.

这样就减缓城市的四十岁人口下降失去近四分之一的人口。

Butresearch of about Salix oritrepha population and plants population age structure and spatial distribution pattern from two levels of genets and ramets has mot been reported so far.

然而至今，对山生柳种群的有关研究和从基株和分株两个层次对植物种群年龄结构和空间分布格局的研究尚未见报道。

This study analyzed the genetic diversity of green foxtail, yellow foxtailand foxtail millet disturbed in the North of china using twelve allozyme (21 loci),such as AATS ADHS AMPS DIAS GDH.. IDHS MDHS ME~ PGD, PGI5 PGMS SKD. The test of gene flow between cultivated population of foxtail millet and its wild relative, green foxtail, was carried out in the field, using a dominant sethoxydim resistant line as a pollen donor and a population of green foxtail as a recipient.

本研究以我国北方近缘种青狗尾草为材料通过对12种等位酶（AAT、ADH、AMP、DIA、GDH、IDH、MDH、ME、PGD、PGI、PGM、SKD）共21个位点的分析研究它们的遗传多样性；以显性抗除草剂谷子种质作为花粉供体材料，以不抗除草剂青狗尾草作为花粉受体材料进行了栽培种向其主要近缘野生种基因漂移的检测研究。

This population therefore is geographically and thus genetically, isolated from the closest population of Indo-Pacific humpback dolphins found across the Taiwan Strait in the coastal waters of Xiamen, China.

这个区域的族群具有地理上及基因上的独特性，因此与海峡之隔的大陆厦门白海豚族群不同。

Genetic Algorithm is restricted by actual system computing ability. Because of the limited number of population and iteration, the choice of initiation Population is a vital of fact, which directly influents the efficiency and the result of algorithm.

遗传算法受实际系统计算能力的限制，种群个体和迭代次数有限，因此初始种群的选择成为算法成败的一个至关重要的因素，直接影响到算法的寻优效率和效果。

In both cases, periods of rising prices coincide with relatively rapid growth of both population and monetary silver, while interludes of deflation are associated with stagnant or declining population.

在这些案例中，价格的上涨与人口的迅速膨胀和银两的增多相一致，然而紧缩的间隔时期与人口的停止和衰减相关。

Cinnabarinus.The life table of experimental population of T. urticae Koch was established at constant temperature of 25 C, illumination time of 16 hours one day and humidity of 50%.The result of the experiment indicated that the value of the innate capacity of increase was 0.2634, 0.1788, 0.2098, 0.2280, 0.1538 on kidney bean, cotton, apple, aubergine and capsicum respectively and the quantity of the offspring obviously increased. When the age distribution of experimental population was steady, the amounts of the immature age were 88.3335%, 85.3052%, 85.0386%, 87.3787% and 86.8404% on five host plants respectively and the amounts of the adults 11.6636%, 14.6946%, 15.0635, 12.6218% and 13.1598% correspondingly.

通过对二斑叶螨在5种寄主植物(四季豆Phaseolus vulgaris、棉花Gossypium hirsutum、苹果Malus pumila、茄子Solanum melongena、辣椒Capsicum annuum)上的实验种群生命表的组建分析，计算出其在这5种寄主植物上内禀增长力r_m分别为0.2634、0.1788、0.2098、0.2280、0.1538；次代种群数量显著增长，在不同寄主植物上每雌产雌数存在极显著差异；在稳定种群年龄分布中，未成熟期在5种植物上分别占总量的88.3335％、85.3052％、85.0386％、87.3787％和86.8404％，成螨期分别占总量的11.6636％、14.6946％、15.0635％、12.6218％和13.1598％；对致死率为99％的不良环境的反应时间都小于30d。

An ecological study on the korgass population of the land snail cathaica cavimargo ( martens , 1879 ) was carried out . the study consisted of three parts : population distribution , shell biometric characters and shell colouration

对霍城果子沟陆生贝类cathaicacavimargo ( martens ， 1879 )种群进行了生态学研究，其内容包括种群分布、壳相特征及贝壳颜色三个方面。

And on this base , analysis the problems that fall of the construction of low-rented dwellings in floating population compact community brings and the Obstacles existed in construction of low-rented dwellings in floating population compact community.

在此基础上，剖析了城市流动人口廉租住宅建设滞后带来的问题以及廉租住宅建设中存在的障碍。

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。