According to the survey for the whole country to the provinces, autonomous regions and municipalities for the whole meeting, to take layered, multi-stage cluster probability sampling method proportional.

據(jù)介紹jizz中国中国，這次調(diào)查以全國(guó)為總體最新欧美性爱COm485在线视频，以各省日韩AV无码精品久久人妻、自治區(qū)国产精品视频区1、直轄市為次總體一级免费播放视频，采取分層、多階段男人天堂视频手机在线看、整群概率比例的抽樣方法。

According to the results of sampling and cluster analysis, the rodent community in the Junggar Basin can be divided into four types: 1farmland community dominated by Cricetulus migratorius and Mus musculus; 2saxideserta community dominated by Meriones erythrourus and C.migratorius; 3residential area community dominated by Rattus norvegiens and Mus musculus; 4haloxylon eremic community dominated by Dipus sagitta and Meriones meridianus.

對(duì)準(zhǔn)噶爾盆地的抽樣調(diào)查又大又粗一级毛片，經(jīng)聚類(lèi)分析国产无码黄片，該地區(qū)的鼠類(lèi)可劃分為4種群落：(1)以灰倉(cāng)鼠+小家鼠為主的農(nóng)田鼠類(lèi)群落；(2)以紅尾沙鼠+灰倉(cāng)鼠為主的礫石荒漠鼠類(lèi)群落色色色热；(3)以褐家鼠+小家鼠為主的城鎮(zhèn)居民點(diǎn)鼠類(lèi)群落久久香蕉不卡毛片；(4)以子午沙鼠(M.meridianus)+三趾跳鼠為主的梭梭荒漠鼠類(lèi)群落。

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

調(diào)查采用典型調(diào)查和整群隨機(jī)抽樣調(diào)查結(jié)合的方法精品福利一区二区三区。

Uniform random sampling is widely applied to many kinds of algorithms in data mining. It processes uniform distribution data set extremely effectively, but easily loses slight cluster and consequently decreases clustering accuracy, when the processing data set is skew distribution.

隨機(jī)抽樣技術(shù)已經(jīng)廣泛應(yīng)用于數(shù)據(jù)挖掘的各類(lèi)算法中先锋影音资源在线，它在處理分布均勻的數(shù)據(jù)集時(shí)非常有效，但在處理分布比較傾斜的數(shù)據(jù)集時(shí)容易丟失小的聚類(lèi)日日艹干日。

Methods: International conventional sphygmomanometry was used to carry out cluster random sampling survey of hypertension and the prevalence rate of hypertension as well as RR, AR, ARp, U test in whole district population (15 384 persons).

以國(guó)際通用血壓測(cè)量方法對(duì)全區(qū)15 384人進(jìn)行整群隨機(jī)抽樣調(diào)查95视频高潮喷水，著重對(duì)有、無(wú)不良生活方式的兩組人群進(jìn)行高血壓患病率調(diào)查特黄男女交性A片激情视频三，及相對(duì)危險(xiǎn)度国产麻豆精品二区无码专区、歸因危險(xiǎn)度、人群歸因危險(xiǎn)度影音资源站、U檢驗(yàn)等的檢測(cè)亚洲午夜三级片，以及相關(guān)及多元回歸分析。

In chapter 4 based above two chapters, we disscuss sampling method of supplemented sample under both cluster sample and stratified sample having auxiliary information.

已有的 分層抽樣和整群抽樣方案都有自己的使用范圍国产精品久久无码HD毛片，在不適合的情況下使用效率很低日韩午夜在线试看网站免费。

Methods: A cluster randomized sampling method was used to collect the samples from the storages in the houses of city inhabitants and the acaroid mites were identified and counted under the microscope.

采用整體隨機(jī)抽樣調(diào)查方法，采集淮南地區(qū)房舍儲(chǔ)藏物標(biāo)本国产哟哟视频在线观看网站，鏡下進(jìn)行粉螨分離鑒定免费看18禁止观看网站尤物，并結(jié)合哮喘的流行病學(xué)調(diào)查表統(tǒng)計(jì)數(shù)據(jù)，進(jìn)行相關(guān)性分析欧美国产综合欧美视频。

Genetic cluster analysis is similar based on the results of morphological and DNA markers, the five populations could be divided into three groups. But there are different groups sort of individual locations, reflecting the similarities and difference about the analysis of the relationship between population with the two kinds of markers, It could be concluded that there was coupling and relevance to some extent in evaluating genetic diversity with the same experiment sampling by morphological and SSR marker variation. However, there was also differences. In research, the two can complement each other.8. Identification of Genetic Relationship of Amygdalus plants by SSRThe genetic relationship among 55 Amygdalus plants collections, belonging to 6 species and collected from both homeland and abroad were identified via SSR molecular marker technique.

新疆野扁桃遺傳多樣性不同研究分析方法結(jié)果的比較與評(píng)價(jià)表型與DNA二種水平的遺傳標(biāo)記方法揭示的遺傳多樣性水平有差異黄色精品视频免费观看，表型性狀比DNA分子標(biāo)記具有更大的變異性；其受到環(huán)境的影響較大黄色视屏在线你懂的，也即對(duì)環(huán)境更敏感美女黄色视频污污版网站。2種水平的遺傳標(biāo)記聚類(lèi)結(jié)果將野扁桃5個(gè)不同分布群體均可分為3個(gè)大類(lèi)群色综合手机在线视频区，但是出現(xiàn)有個(gè)別不同的群體排序位置，反映了2種標(biāo)記在分析種群間關(guān)系上的異同性美女黄色h网站网址，從本研究結(jié)果來(lái)看亚洲永久免费视频在线，說(shuō)明表型與DNA標(biāo)記有一定的耦合性和相關(guān)性，但也存在差異午夜两性免费视频，在研究上可以互為補(bǔ)充色呦呦网站在线。8。

The six groups classified by cluster analysis of SSR markers is consistent with the available pedigree and the result of combining ability. So it is feasible to analyze the genetic diversity of maize population by SSR markers and to distinguish heterotic group by method of mixed sampling.

6個(gè)玉米群體的聚類(lèi)結(jié)果與系譜來(lái)源和田間配合力測(cè)定結(jié)果基本一致久久亚州黄色视频，說(shuō)明国产黄色视频免费关看，用若干單株混合取樣分析玉米群體SSR的遺傳多樣性，進(jìn)而對(duì)不同玉米群體劃分雜種優(yōu)勢(shì)類(lèi)群是可行的3p国产精品一区。

Methods a cluster stratified sampling method was used to chose 3 989 pupils from six schools of different levels in xiamen. they were investigated with conners parent symptom questionnaire.

采用整群分層抽樣法抽取廈門(mén)市6所不同層次的小學(xué)一～五年級(jí)學(xué)生3 989名為調(diào)查對(duì)象AAAAA国产黄片在线播放，應(yīng)用conners量表進(jìn)行調(diào)查，dsm-ⅳ診斷標(biāo)準(zhǔn)確診国产老师色。