Hill defined the effective species richness A=2 H , i.
修正了 Frontier和 Ricotta等关于有效物种丰富度指数 A与物种丰富度指数 S之间幂律关系的定义 ,探讨了 A与 S之间分形关系的生态学意义 ,认为分形维数 D是群落均匀度测度值在物种数 S不断增加的过程中 ,向其逼近的一个理论值 ;提出了利用双对数坐标上建立的 A与 S拟合直线的方程 ,对群落均匀度的 4种变化趋势进行描述的方法。
~(10)B abundance follows up of reactor main loop soluble boron;
反应堆一回路可溶硼~(10)B丰度的跟踪计算
Effects of different energy intakes on abundance of MTP mRNA in liver of periparturient dairy cows;
不同能量摄入水平对围产期奶牛肝MTP mRNA丰度的影响
Impact of soil fertility maintaining practices on protozoa abundance in high production agro-ecosystem in northern China;
不同土壤培肥措施对华北高产农田原生动物丰度的影响
For catching the isotope of the needed concentration, it is necessary to understand the separation mechanism of the multicomponent isotopic mixture inside the cascade.
为了获得所需丰度的同位素，需要将多个分离单元联结成级联。
The unified expression of the separation power and the overall separation factor, the cut and the concentration of the feed were derived.
根据分离功率的定义,导出了分离功率与全分离系数、分流比及供料丰度3个参数的一般关系式,并分析了这3个参数的变化对分离功率的影响。
The concentration of isotopes and the last separation time from Americium-241 are two important attributes of Plutonium materials,and MGA and PC/Fram.
同位素丰度及其分离时间是钚材料的两个重要属性,目前常用的分析软件是由美国采用固定能量法开发的PC/Fram和MGA。
A total of 290 species(including 23 varieties and 5 forms)were identified by microscope,and species composition,richness and community structure were analyzed using statistical and clustering methods.
在此基础上,作者通过统计和聚类分析方法,研究了这一区域浮游植物的物种组成、丰度变动和群落结构等特征。
The species richness, abundance and species diversity ind.
在垂直分布上,种的丰度、多度和物种多样性指数都以海拔1100-1150m最高,随着海拔升高或降低,各多样性指标基本上表现递减的趋势。
In addition the seasonal variation and richness distribution of zooplankt.
此外,还探讨了本海区浮游动物的丰度分布和季节差异,表明本海域为一低量值、相对稳定的海域,同时还就上述两要素(丰度和多样性)与其他相关海区进行了比较性剖析。
high abundance sensitivity mass spectrometer
高丰度灵敏度质谱计
absolute isotopic abundance measurement
绝对同位素丰度测量
relative isotope abundance determination
相对同位素丰度测量
ROBUST ELEMENT ABUNDANCE ANALYSIS AND ELEMENT ABUNDANCE OF THE UPPER DEVONIAN STRATA IN NANDAN-HECHI BASIN, GUANGXI PROVINCE
稳健丰度分析及丹池盆地上泥盆统元素丰度的意义
atmospheric abundance(s)
（例如二氧化碳）在大气中的丰度／成分
Isotopic Abundance Determinations of Hafnium in a Hafnium Reagent and a Control Rod
铪试剂及控制棒中铪同位素丰度测定
A Revision on Lithium Abundance Dispersin in Pleiades Stars
重新审查昴星团成员星锂丰度的弥散
The Age-metallicity Relation of Stars in Different Stellar Populations;
不同星族恒星的年龄—金属丰度关系
Study of Threshold Value of Organic Enrichment of Carbonate Gas Source Rocks;
碳酸盐岩气源岩有机质丰度下限研究
Comparison of S-elements Abundance in Strong Bariun Stars and Mild Bariun Stars;
强钡星和弱钡星s-元素丰度的分析
Grey relational evaluation on richness-degree of knowledge resources of papermaking enterprises;
造纸企业知识资源丰度的灰关联评价
Research on Relationship between Resource Abundance and Regional Economy Development in China:Based on Resource Curse Theory;
中国区域经济与资源丰度相关性研究
A Calculative Method of Element Abundances in the Envelope of AGB Stars;
一种AGB星外包层元素丰度的计算方法
the whole family has a big dinner together.
一家人共度丰盛的晚餐。
The relative abundance ofphytophages and predators were 97.6% and 2.85% respectively.
植食类的相对丰盛度为96.7%,捕食类相对丰盛度为2.85%。
Earthquake Intensity and Influence Field around Heyuan Area and Fortification Intensity of Xinfengjiang Reservoir Dam
河源新丰江地区地震烈度、地震影响场与新丰江水库大坝设防烈度
the secondary factors were the food abundance, vegetation type, coverage and shrub overcast, respectively;
次要因子是食物丰富度、植被型、郁闭度、灌木盖度;
He's a man of great knowledge, but he always maintains an attitude of modesty.
他知识丰富，但总是保持谦逊的态度。