相关关系

The number of bacteria, fungi, ammonifier and nitrobacteria were positively correlated with the biomass of growing roots and absorbing roots, while the number of nitrogen-fixing bacteria was negatively correlated with absorbing root biomass.

细菌、真菌、氨化细菌和硝化细菌数量与生长根和吸收根生物量之间显著正相关；固氮菌则仅与吸收根生物量显著负相关；而纤维素分解菌与根系生物量的相关关系不显著。

There exists a close relation between growth characteristics and wood properties of the provenance. The height and breast height diameter growth of the provenance had a positive correlation with tracheid diameter and annual ring width, and a negative correlation with tracheid wall thickness and wood density.

种源生长与材质性状间存在一定的相关关系，如种源的高径生长与管胞直径和年轮宽之间存在正相关，而与管胞壁厚和木材密度之间却存在一定程度的负相关。

The results showed that the first canonical correlation coefficient between aldehydes, ketones, esters and the total quantity of each kind of ingredient and smoking quality achieved 5 % or 1 % remarkable level. And their correlation depended mainly in the correlation between phenylacetaldehyde, furfural, megastigmatrienone-1, megastigmatrienone-3, geranylacetone,β-damascenone, keto-isophorone, dihydroactinidiolide and smoking quality.

结果表明：醛类成分、酮类成分、酯类成分与香气质、香气量的第一典型相关系数达到5%或1%显著水平，各类成分总量与香气质、香气量的第一典型相关系数达到1%极显著水平，其相关关系主要表现在苯乙醛、糠醛、巨豆三烯酮1、巨豆三烯酮3、香叶基丙酮、β-大马酮、氧化异佛尔酮、二氢猕猴桃内酯等成分与香气质、香气量的相关上。

Aiming at the limitation of this algorithm,the universal cut-and-try algorithm is put forward.The complexities of macroscopic traffic volume and GDP time series are calculated,respectively.The results show:the complexity of GDP has a positive correlation with the complexity of freight traffic volume;the influence of the complexity of GDP on the complexity of macroscopic traffic volume is long-term with lagged effect;and the correlation between GDP and macroscopic traffic volume has an uncertain relation with the correlation between their complexities.

通过计算宏观交通量与GDP时间序列的复杂度，得到简单结论：GDP复杂度与货运交通量复杂度具有较强的正相关关系；GDP复杂度对宏观交通量复杂度的影响是长期的，具有滞后效应；GDP与宏观交通量现象的相关程度与二者复杂度的相关程度没有必然的联系。

For the problem of data s mismanagement, separated usage of study tools and hard for awareness processing widely existing in the traditional collaborative learning system, the nested knowledge space model is presented in this paper, which includes the concepts of knowledge domain, inclusion relation, correlation relation, quasi-order relation and parallel relation among the knowledge domain,and knowledge space etc.

针对传统协同学习系统中普遍存在着学习材料组织混乱、学习工具隔离使用和感知处理困难等问题，本文提出了嵌套式知识空间模型，该模型包含知识域、知识域之间的包含关系、相关关系、拟序关系和并行关系以及知识空间等概念。

The Gaoshawo provenience showed a better growth status in plain region by comparing with the Hangjinqi provenience of the seedling physiological characterization and the medicinal composition content of the annual root.

对一年生直播甘草的分析表明，主根长度与甘草苷含量达到显著正相关水平，根重与甘草酸和甘草苷含量均呈一定程度的正相关；甘草苷含量与甘草酸含量呈极显著正相关关系，说明甘草酸和甘草苷的积累速度具有协同性。

Based on the dataset of 52 plots investigated from the field,the interspecific relationship among 31 dominant populations of the communities of abandoned land in Guandi Mountains,Shanxi was studied by using χ^2 test for 2 × 2 contingency tables,Pearson＇s correlation coefficient test and Spearman＇s rank correlation coefficient test, respectively.

根据野外52个样方的调查数据，运用2 2列联表的χ^2检验、Pearson相关系数检验和Spearman秩相关系数检验研究了山西关帝山撂荒地植被31个建群种和优势种种间关联和相关关系。

Heterosis for fructan accumulation and content,tissue nitrogen accumulation and content in various growth stages of six hybrids was studied at the University of Sydeny, Plant Breeding Institute, Narrabri in 1996 season.

果糖积累的杂种优势与籽粒产量、籽粒氮产量和含量优势一般无显著相关关系；开花期和灌浆末期植株果糖含量的杂种优势正相关于籽粒产量优势，负相关于籽粒氮含量优势。

Correlation e-quation between the pycnometric and densimetric determination of relative density was obtained by regression analysis of test data.

用这两种方法测得的结果一致与否，为探求这两者之间相关关系的密切程度和表现形式，通过测定系列香精的密度，并对所得数据进行线性相关和回归分析，得出了比重瓶法与密度仪法所得结果的相关方程。

Based on morphologic and biomass measurement comparisons of morphology and resource allocation of Plantago major and P. depressacollected in the same environment have been made. The results show that quantitative relationships and resources allocations between different modules are proper in different species, they can reflect unprejudicedly ecological characteristics of individuals.

本文通过对取自同一生境条件下的两种车前属植物，即大车前和平车前(P 。depressa)不同构件间的形态学特征和生物量相关关系的比较分析，发现构件间的数量关系和各构件在资源配置上具有种间特异性，各构件生物量间的数量关系及各构件在资源配置上的数量关系，更能真实地反映出物种个体的生态学特征。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。