查询词典 methods of sampling

The methods for sampling, analyses and source apportionment of particulate in air were described in detail.

研究了宁波市环境空气中颗粒物的浓度水平、粒径分布、组成特征及污染来源。

Methods Cluster sampling was used, and epidemiological investigation was carried by means of questionaires.

采用整群抽样的方法，运用自编的调查表进行流行病学调查。

The investigation applied the methods of typical survey and cluster random sampling survey.

调查采用典型调查和整群随机抽样调查结合的方法。

With the methods of systematic and random sampling, more than 2000 specimens were collected in 7 kinds of habitat, belonging to 3 superfamilies, 11 families, 30 genera and 48 species. Of the collected specimens, grasshopper has the most species accounting for 62.5% of the total species.

采用系统取样和随机取样相结合的方法调查了7种生境中直翅目昆虫的种类和数量，共采集到昆虫48种，标本2000余号，其中蝗虫类30种，蚱类6种，螽斯类12种，隶属于3总科，11科，30属。

Objective: to compare the relative safety of two methods of chorionic villus sampling.

目的：比较两种术式绒毛取材的相对安全性。

Studies the high precision estimation methods of echo frequency, proposes a simplified TLS-ESPRIT method for frequency estimation based on uniform sampling data. For moving platform, such as torpedo, proposes a time fusion algorithm for target status estimation based on multicycle data of single sensor.

c。深入研究了回波信号的高精度频率估计技术，提出了一种基于均匀采样数据的TLS-ESPRIT频率估计算法；针对运动平台，提出了一种单传感器多测量周期目标状态估计的时间融合算法；以炸点预测为例构造了相应的状态模型及算法，计算机仿真验证了融合算法的有效性。

According to the phytosociological theories and methods of Braun-Blanquet's school, the regional savanna vegetation of the dry-hot valleys of Yuanjiang river had been investigated. Based on the principle of fidelity degree, the typical 110 releves taken from every sampling stands of the dry-hot valleys were sorted up from below to upper into 15 Associations, then into 5 Alliances, 2 Orders and 1 Class. A synoptic classification system of Class-Order-Alliance-Association was established for the purpose to reflect deeply the characteristics of all syntaxa there in the aspect of plant component and their abundance-dominancy, presence, cover coefficient, life form, growth form, and ecological environment, community structure, species types and so on.

采用Braun-Blanquet植物群落学研究的理论与方法，对云南元江中上游干热河谷分布的植被进行考察研究，把各处取得较典型的110个样地记录按确限度的原则由下而上归类成15个群丛、5个群属、2个群目和1个群纲，建立了元江干热河谷萨王纳植被群纲—群目—群属—群丛分类系统综合表和15个群丛表，以全面深入反映全干热河谷植物群落各级分类单位中各植物种类组成的多优度、存在度、盖度系数、生活型和生长型等特征及其群落结构、生态环境和种型类别。

Discussing some problem such as selection of the input and output, sampling frequency, testing signal and pretreatment of data in detail, tabling a proposal of methods of collecting necessary information for characteristic of process .

详细讨论了诸如输入输出的选择、采样频率、测试信号和数据预处理等问题，提出了适于收集过程特性必要信息的实验方法。

In 2007 and 2008, the behavioral characteristics of breeding pairs of Blue-Eared pheasant was studied by the methods of scan sampling in Zecha forest, Gansu.

2007年和2008年采用瞬时扫描取样法在甘南州则岔林区对蓝马鸡配对期行为做了观察。

Methods Cluster sampling was used to investigate general growth situation of the children at 6～13 years of Zhuang and Han nationalities. Their body height, sitting height, body weight and chest circumference were measured.

采用整群抽样方法，以广西移民安置区6～13岁壮族、汉族儿童为调查对象，对儿童进行身高、坐高、体重、胸围测量，家长完成儿童生长发育影响因素问卷调查。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。