物种数量,species number
1)species number物种数量
英文短句/例句

1.an indeterminate number of plant species in the jungle.丛林中植物的物种数量无法确定。
2.A variation of a physical quantity,used to convey data.用于传递数据的一种物理量的变化(量)。
3.Influence of DCD on Soil Microorganism双氰胺对土壤微生物种群数量的影响
4.Species composition and abundance variation of protozoa in Dianshan Lake淀山湖原生动物种类组成及数量变动
5.export wheat without quantitative limitations; quantitative analysis determines the amounts and proportions of the chemical constituents of a substance or mixture.没有数量限制的小麦出口;数量分析决定了一种物质或混合物的化学成分的数量和比例。
6.A quantity that expresses the degree to which a substance possesses a property, such as elasticity.模数,模量一种参数,表示一种物质具有一个特性之程度,如弹性
7.A constituent, such as a chemical compound or element, present in quantities less than a standard limit.痕量比标准限度数量小的一种组成物,如化学化合物或元素
8.Studies on Patterns of Component Species Number and Biomass of Desert Rodent Community under Different Disturbance不同干扰下荒漠啮齿动物群落组成种数量和生物量格局
9.If a variety were to flourish so as to exceed in numbers the parent species, it would then rank as the species.如果一个变种的繁殖,超过它的亲种数量,它就会被列为物种。
10.Rarity is not merely determined by the number of individuals in a species, it is also about how unusual that species is.稀缺性不仅仅由某个物种所包含的个体数量决定,还和物种的数量有关。
11.A hydrate in which the molecular ratio of water molecules to anhydrous compound is1: 2.半水合物一种水合物,其所含水分子与无水化合物之比数量为1:2
12.a determinate distance; a determinate number; determinate variations in animals.一定的距离;确定的数量;确定的动物变种。
13.The types of protein in biological world are estimated as between the order of magnitude of1010~1012.生物界蛋白质的种类估计在1010~012数量级。
14.The crop and the way it is used determine the nutrients removed.作物种类及其利用方式决定着养分耗失的数量。
15.Such materials are bulky and expensive both to transport and to apply.这种物质既数量大,又在运输和应用上费用昂贵。
16.Relationship between species and higher taxons in number in Aves物种与高级分类单元的数量关系——以鸟类为例
17.The Species Composition and Distribution of Phytoplankton in the Beibu Bay北部湾海域浮游植物的种类组成与数量分布
18.Marine life is incredibly rich and varied.海洋生物种类之多、数量之大,简直是不可思议。
相关短句/例句

microbial population微生物种群数量
3)Species individual amount物种的个体数量
4)Species quantification物种定量
5)population number种群数量
1.Based on the field survey data obtained from May 1996 to June 2003,the resources of waterfowl in Hubei province of Central China,including species diversity,distribution and population number were studied with systematic sampling such as direct count,quadrat and special survey methods.1996年5月至2003年7月,使用直接计数法、样方法和专项调查法研究了湖北省湿地水禽资源,包括物种多样性、分布和种群数量。
2.Trapping mothes using blacklight trap in tobacco field at Fuquan county, the results show that the (seasonal) (dynamics) of the population number of Prodenia litura (Fabricius) and Heliothis armigera (Hubner) changes by a wide margin (among) different years.在福泉烟田设置黑光灯诱蛾 ,结果表明 :斜纹夜蛾及棉铃虫成虫种群数量季节性消长年度间变化大 ,强翅夜蛾年发生 2个世代 ,金弧翅夜蛾、掌夜蛾年发生多世代。
3.The population numbers, densities, structure and reasons of negative increasing of Moschus chrysogaster in Xinglong Mountain were studied in the paper.对兴隆山马麝资源的种群密度、种群数量和种群结构以及负增长原因进行了研究分析。
6)Population[英][,p?pju'le??n][美]['pɑpj?'le??n]种群数量
1.Effects of fertilizers of different levels on Myzus persicae population on broccoli;不同施肥水平对青花菜桃蚜种群数量的影响
2.Monitoring research of population and distribution of giant panda in Changqing nature reserve;长青保护区大熊猫种群数量与分布监测研究
3.Distribution and population of Oriental Pied Hornbill in Nonggang Natural Reserve;弄岗自然保护区冠斑犀鸟的分布与种群数量
延伸阅读

濒危物种处于危亡状态的物种。如大熊猫、白鳍豚、朱fe64、银杉、珙桐等。数量稀少,地理分布狭窄。其绝灭趋势除与自然灾害有关外,主要是受人类活动的影响,如不合理的土地利用、森林破坏、水体污染等。其种类仍在不断增加。