This paper studies how to choose representative points form a bivariate normal population with as much information of the population as possible arises.

The Problem of Selecting Representative Points from A Bivariate Normal Population

在二元正态总体中选取代表点的问题

Bivariate Wavelet Analysis of He'nan Precipitation and ENSO The Impact of Variations of Precipitation on Source of Water in Henan during the Past 50 Years

交叉小波变换在河南降水时频分析中的应用近50年河南降水变化对水资源的影响

The correlation between tropic sea surface temperature of global and NAO and ENSO events were studied by means of bivariate wavelet analysis.

采用交叉小波变换方法分析了热带SST、NAO与ENSO事件之间的多时间尺度相关特征。

Finally, to use the combinational methods of industry chain analysis, advantages and disadvantages analysis and bivariate cost analysis to support the conclusion.

最后，综合运用产业链分析、利弊分析和二元成本分析等多种分析方法，支持了所得出的结论。

RESULTS: By bivariate analysis, the ABI is associated with sex, body mass index ( BMI), diastolic blood pressure ( DBP), total cholesterol ( TC), high-density lipoprotein cholesterol ( HDL-C), smoking habit.

结果双变量相关分析提示ABI与性别、体重指数（BMI）、舒张压（DBP）、总胆固醇（TC）、高密度脂蛋白胆固醇（HDL-C）、吸烟相关。

Several statistical methods, such as factor analysis, bivariate analysis, hierarchical regression and SEM, were used to analysis the relation about OCB 、 psychology contract and organizational justice in this study;

该研究采用相关分析、方差分析、分层回归分析等统计方法分析了心理契约、组织公平和组织公民行为之间的关系；

Descriptive statistics and bivariate analysis were used to characterize injury patterns and multivariate analysis was used to identify factors associated with severe injury.

描述统计和双变量分析用来描述伤害类型，而多重变量分析用来确定严重伤害的相关因素。

Marine or freshwater bivalve mollusk that lives attached to rocks etc..

附着在岩石等物上的海水或淡水双科类软体动物。

In addition, the complex of quinolone and bivalent canon in seawater or brackish water was speculated not stable, quinolone can be released into media when diluted with water without bivalent cation.

此外，喹诺酮与二价阳离子的螯合产物可能并不稳定，当用无二价阳离子水稀释后药物可被重新释放。

It is discussed for the effect of types of surfactants and concentrations, alkaline concentrations, salinity, polymer, crude oil fractions, bivalent cation, non-ionic surfactants on interfacial tensions.

探讨了表面活性剂种类和浓度、碱浓度、矿化度、聚合物、原油馏分、二价阳离子和非离子表面活性剂等对界面张力的影响。

With the action of some bivalent cation, high temperature shift catalyst has been prepared by mixture precipitation method using open-hearth dust as a raw material.

利用钢铁厂平炉尘制备中温变换催化剂，制备成本低，工艺简单，活性达到部颁标准，具有明显的经济效益。

Atomic States of Bivalent Atom and Their Number

二价原子的原子态及其原子态数研究

A hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition.

一种二价或三价金属元素，坚硬的银白色铁磁体，植物动物营养中的微量元素。

A heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures.

银色有毒金属元素，重，单价或二价，唯一一种在常温下呈液态的金属。

A soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores.

一种有毒的二价金属元素，软质、蓝白色，有延展性，与锌矿石共生。

A light strong brittle gray toxic bivalent metallic element.

一种灰色有毒的二价金属元素，轻质、坚韧、易碎。

Objective To establish a kind of rapid and simple biuret method for measuring cerebrospinal fluid protein of automatic analyser.

目的在全自动分析仪上建立一种快速简便的脑脊液蛋白双缩脲测定法。

In this experiment, the content of protein was assayed by biuret method and Kjeldahl determination.

采用凯氏定氮法和光谱法分析测定完达山奶粉系列中蛋白质的含量。

Spectrophotometric Determination of Cereals Proteins by the Biuret Method

缩二脲法测定谷物蛋白质

Spectrophotometric Determination of Beans and Cereals Proteins by the Biuret Method

缩二脲法分光光度测定豆类和谷类蛋白质