sampling distribution 中文意思是什麼

sampling distribution 解釋
sampling引起的不同
  • sampling : n. 1. 取樣（品），取標（本）〈指行動或程序〉。2. 樣品，標本。3. 剽竊拼湊歌曲。
  • distribution : n 1 分配，分發，配給；分配裝置[系統]；配給品；配給量；【經濟學】配給方法，配給過程；分紅；【法律...
  1. The spatial distribution patterns and methodology of sampling of the red globe grape downy mildew disease plant in filed

    紅地球葡萄黑痘病的發生與防治
  2. Chromium, manganese and ferruginous manganese ores - sampling and determination of moisture content and size distribution

    鉻礦石錳礦石鐵錳礦石.取樣及水分粒度分佈的測定
  3. Does allogroomiog serve a hygienic function in the sichuan snub - nosed monkey to test the hygienic functional hypothesis of allogrooming in the sichuan snub - nosed monkey, we analyzed the distribution of such behavior over the body surface of individuals in the west ridge troop in the yuhuangmiao region of qinling mountains, shaanxi province, china. based on 113 days of observations of the troop, 293 allogrooming bouts were obtained by focal - animal sampling. we divided the body surface of the monkeys into 17 areas

    第二章川金絲猴的理毛行為是否符合衛生功能應用目標動物取樣法，在113天的跟蹤觀察（有效觀察時間351小時）的基礎上，收集了293個相互理毛回合（ bout ）的數據，對秦嶺川金絲猴（ rhinopithecusroxellana ）玉皇廟西梁群個體間的相互理毛進行了分析，檢驗相互理毛是否符合衛生功能假說（ hygienicfunctionhypotheses ） 。
  4. The spatial distribution pattern and sampling techniques of the eggs of the rice water weevil, lissorhoptrus oryzophilus, in rice paddy fields of north china

    稻水象甲卵的空間分佈型及抽樣技術研究
  5. This paper researches on the water and suspension in zhujiang ( pearl ) river and her three branches, sampling in makou hydrological gorge station of xijiang river, hekou hydrological gorge station of beijiang river and boluo hydrological gorge station of dongjiang river. the author calculated the riverine carbon flux and measured the content of different carbon forms and carbon isotope composition. furthermore, the author also studied drainage basin erosion and the influence of vegetation distribution on erosion

    本文以珠江水體、懸浮物為研究對象，通過對西江馬口、北江河口、東江博羅斷面水體取樣，分析水體中不同形態碳含量，測定碳同位素值，並計算了河流碳通量值；還對珠江流域的侵蝕狀況及植被分佈對流域侵蝕的影響進行了探討。
  6. Water samples are taken regularly throughout the entire supply and distribution system. the sampling points include water treatment works, service reservoirs, trunk mains, connection points and domestic taps. the data from these samples are checked against the world health organization s guidelines for drinking - water quality, which were developed by experts from around the world

    在整個供水及輸水系統中，有關人員經常從濾水廠、配水庫、輸水干管、供水接駁位置和用戶水頭抽取樣本進行化驗，鑒定化驗數據所顯示的水質是否符合世界?生組織所訂定的飲用食水水質準則。
  7. Compared with the hypothesis tests and sampling inspections for normal distribution, the confidence tests can overcome the disadvantage that to accept a null hypothesis may simply mean that it is not rejected by significance hypothesis tests, and greatly improve the test precision

    置信檢驗克服了顯著性假設檢驗在接受原假設時缺乏說服力的弱點，能夠以高概率判斷正態母體特徵值是否滿足工程中規定的條件。
  8. Under the appropriate conditions of sampling equipment of gas chromatographic headspace analysis, determine a suitable salt and a suitable extracting solvent by the orthogonal design method, then determine the fitting feed composition of ethanol - water mixture, the fitting distribution between extracting solvent and mixture, and the fitting salt concentration by the uniform design method

    在對建立的頂空氣相色譜采樣裝置的操作條件進行優化之後，先用正交試驗設計法確定非連續性因素鹽和萃取劑及其在備選水平中的適宜水平，再用均勻試驗設計確定連續性因素乙醇的進料濃度、萃取劑配比和加鹽量及其備選水平中適宜的水平范圍。
  9. Overvoltage amplitude is higher than initialization value, data acqusition card start sampling. when sampling is over, computer save data to file. engineer can analyse parameter of waveform by appropriative software reading data from file. in the trial measurement, the device shows good performance. simulant trial and actual result indicate that method in the paper acquire approving effect, and the device can be used in the lokv distribution network

    當裝置在線運行時，系統中出現的過電壓信號通過分壓器傳遞到同軸電纜，通過觸發電路判斷，如果大於預先設定的值則啟動採集卡的同時采樣，采樣結束后，計算機把數據存盤並以文件格式保存，管理人員隨時通過調用專用軟體調取文件進行各種參數分析。
  10. The number of runs is a statistic with its own special sampling distribution and its own test.

    連續級數是一個具有獨特抽樣分佈和檢驗方法的統計量。
  11. And the number of charophyta and rhodophyta is less, rich in wulongquan, and none or less in other sites. from the sampling sites distribution of macroalgae in niangziguan, macroalgae species is the most in wulongquan, 30 species, accounting for 48 % of the total. the next is gunquan, 27 species, accounting for 44 %, the third is shuiliandong, 23 species, accounting for 37 %, and pingyanghu 21 species, accounting for 34 %, the last is shuishangrenjia, 17 species, only accounting for 27 %

    從娘子關泉域大型藻類植物在各採集點的分佈看，五龍泉大型藻類種數最多，為30種，占總種數的48 ，其次是滾泉為27種，占總種數的44 ，第三是水簾洞泉，為23種，占總種數的37 ，第四是平陽湖，種數為21種，占總種數的34 ，水上人家泉的種數最少，為17種，僅占種數27 。
  12. Monte carlo is a method that approximately solves mathematic or physical problems by statistical sampling theory. when comes to bayesian classification, it firstly gets the conditional probability distribution of the unlabelled classes based on the known prior probability. then, it uses some kind of sampler to get the stochastic data that satisfy the distribution as noted just before one by one

    蒙特卡羅是一種採用統計抽樣理論近似求解數學或物理問題的方法，它在用於解決貝葉斯分類時，首先根據已知的先驗概率獲得各個類標號未知類的條件概率分佈，然後利用某種抽樣器，分別得到滿足這些條件分佈的隨機數據，最後統計這些隨機數據，就可以得到各個類標號未知類的后驗概率分佈。
  13. Studies on spatial distribution and sampling model of gastrophysa atrocyanea motschulsky larvae in tobacco field

    煙田蓼藍齒脛葉甲幼蟲的空間分佈型和抽樣技術研究
  14. It was the most remarkable about the changes in number of chlorophyta by the season. from the sampling sites distribution of macroalgae in every division, the number of chlorophyta is the most, more than the total of the other divisions. cyanophyta distributes equably, and has no obvious difference in every sampling site

    從各門類大型藻類植物在各採集點的分佈看，綠藻門植物的數量都是最多的，比其它門類的總和還多，藍藻門分佈較均勻，在各採集點的分佈相差不多，輪藻門和紅藻門種類較少，在五龍泉分佈較多，其它採集點沒有或少有分佈。
  15. A study on spatial distribution pattern and sampling technique of population in natural pinus taiwanensis communities

    天然黃山松群落種群分佈格局取樣技術的研究
  16. In this thesis, the critical components of pcs are analyzed and tested in detail. i present the scheme of reliability qualification test of capacitors, furthermore, analyze the sampling inspection scheme theoretically for capacitors and put forward the proposals to improve this scheme. for most of components in pcs with high reliability or long lifecycle, which need great investment of time and material for their reliability tests, this paper provides a new and effective statistical method for this kind of components - the progressive stress accelerated life testing with exponential distribution

    可靠性試驗也是可靠性工程的重要組成部分，能源系統許多元器件為高可靠性、長壽命器件，且大部分是非標準器件，為保證整個系統的可靠性，必須對備選元器件進行可靠性試驗，本文對能源系統關鍵器件進行了詳細的試驗分析，給出了電容器的鑒定試驗方案，對其抽樣試驗方案進行了理論分析並給出了方案改進建議。
  17. On the loess plateau, water is the main limiting factors for vegetation growth. root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments. even - aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation. investigatiing results showed that indicated that on all sites, root biomass decreased with depth, and the distribution depth of fine root was deeper than that of coarser root. the results of variance analysis indicated that there were great differences in root biomass among different diameter classes, and coarser root was the main sources of variance, and the root biomass, especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites. analysis of the vertical root distribution parameters, root extinction coefficient, indicated that the value of on northern exposition was more than 0. 982, while the value of on southern exposition was less than 0. 982, which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition. and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ), which was in favor of the uptake of water and nutrients from deeper layers, helped the trees to adapt the arid environment, and promoted the growth of the upper parts of the tree

    在中國西北黃土高原地區，水分是樹木生長發育的主要限制因子.根系分佈特徵由於反映了樹木對環境條件的利用程度而具有更加特殊的生態意義.本研究選擇陽坡和陰坡不同立地上年齡一致的刺槐林調查了根系分佈特徵.根系垂直分佈特徵的調查結果表明，在所有立地上，根系生物量隨著深度的增加而降低，其中細根的分佈深度大於粗根的分佈深度.方差分析結果表明:不同立地上不同徑級根系的分佈特徵也有明顯的差別，粗根是差異存在的主要原因，陰坡立地上的根系生物量，特別是細根生物量大於陽坡立地上的.對根系消弱系數的分析結果表明，陰坡立地上的根系消弱系數大於0 . 982 ，而陽坡立地上的根系消弱系數小於0 . 982 ，說明陰坡立地上刺槐根系的生物量在深層土壤中的分佈相對量更大一些.其中細根的根系消弱系數大於粗根的，這種根系分佈特徵有利於根系對深層土壤水分養分的吸收利用，進而促進樹木地上部分的生長發育.圖3表3參15
  18. Abstract : on the loess plateau, water is the main limiting factors for vegetation growth. root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments. even - aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation. investigatiing results showed that indicated that on all sites, root biomass decreased with depth, and the distribution depth of fine root was deeper than that of coarser root. the results of variance analysis indicated that there were great differences in root biomass among different diameter classes, and coarser root was the main sources of variance, and the root biomass, especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites. analysis of the vertical root distribution parameters, root extinction coefficient, indicated that the value of on northern exposition was more than 0. 982, while the value of on southern exposition was less than 0. 982, which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition. and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ), which was in favor of the uptake of water and nutrients from deeper layers, helped the trees to adapt the arid environment, and promoted the growth of the upper parts of the tree

    文摘:在中國西北黃土高原地區，水分是樹木生長發育的主要限制因子.根系分佈特徵由於反映了樹木對環境條件的利用程度而具有更加特殊的生態意義.本研究選擇陽坡和陰坡不同立地上年齡一致的刺槐林調查了根系分佈特徵.根系垂直分佈特徵的調查結果表明，在所有立地上，根系生物量隨著深度的增加而降低，其中細根的分佈深度大於粗根的分佈深度.方差分析結果表明:不同立地上不同徑級根系的分佈特徵也有明顯的差別，粗根是差異存在的主要原因，陰坡立地上的根系生物量，特別是細根生物量大於陽坡立地上的.對根系消弱系數的分析結果表明，陰坡立地上的根系消弱系數大於0 . 982 ，而陽坡立地上的根系消弱系數小於0 . 982 ，說明陰坡立地上刺槐根系的生物量在深層土壤中的分佈相對量更大一些.其中細根的根系消弱系數大於粗根的，這種根系分佈特徵有利於根系對深層土壤水分養分的吸收利用，進而促進樹木地上部分的生長發育.圖3表3參15
  19. Sampling distribution of a statisti

    某個統計量的
  20. The standard deviation of a sampling distribution. it is the statistic used to make statements about the accuracy of estimates based on sample information

    抽樣分佈的標準偏差.統計學上用來說明從樣本預測的數據的準確性
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