sample variation 中文意思是什麼
sample variation
解釋
樣本變差-
This result was the biochronological base for estimating sample ages in the study on genus gephyrocapsa. 2. morphological variation of gephyrocapsa was investigated based on biometrically analyzing 6 morphological features of a coccolith placolith, e. g
（ 2 ）結合時間序列來對橋石種類的在演化的過程中形態變化進行分析，發現在整體演變的進程中，幾種形態因子中一直處在最劇烈變化中的是盾盤的長度。 -
The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation. it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design. the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence, the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample, it assures the sample approach to the pareto optimal solution set in fast convergent speed
較好地解決多阻尼比反應譜擬合問題；本文方法通過一次運行就能獲得一組具有集系特性的地震動，在擬合多阻尼比反應譜的人造地震波集系的模擬方面有傳統方法所不能比擬的優勢，產生的人造波或人造波集系可滿足工程抗震設計需要；在遺傳演算法中，交叉概率和變異概率是影響收斂速度的重要參數，本文採用的改進自適應交叉概率和變異概率，可以根據當前樣本的好壞程度來自動地選擇適當的交叉概率和變異概率，以保證演算法始終以較好的速度向pareto最優解集逼近。 -
Abstract : soil incubation experiments were conducted in lab to delineate the effect of soil temperature and soil water content on soil respirations in broad - leaved / korean pine forest ( mountain dark brown forest soil ), dark coniferous forest ( mountain brown coniferous forest soil ) and erman ' s birch forest ( mountain soddy forest soil ) in changbai mountain in september 2001. the soil water content was adjusted to five different levels ( 9, 21, 30, 37 and 43 ) by adding certain amount of water into the soil cylinders, and the soil sample was incubated at 0, 5, 15, 25 and 35 for 24 h the results indicated that in broad - leaved / korean pine forest the soil respiration rate was positively correlated to soil temperature from 0 to 35. soil respiration rate increased with increase of soil water content within the limits of 21 to 37, while it decreased with soil water content when water content was over the range. the result suggested the interactive effects of temperature and water content on soil respiration. there were significant differences in soil respiration among the various forest types. the soil respiration rate was highest in broad - leaved / korean pine forest, middle in erman ' s birch forest and the lowest in dark coniferous forest. the optimal soil temperature and soil water content for soil respiration was 35 and 37 in broad - leaved / korean pine forest, 25 and 21 in dark coniferous forest, and 35 and 37 in erman ' s birch forest. because the forests of broad - leaved / korean pine, dark coniferous and erman ' s birch are distributed at different altitudes, the soil temperature had 4 - 5 variation in different forest types during the same period. thus, the soil respiration rates measured in brown pine mountain soil were lower than those in dark brown forest and those measured in mountain grass forest soil were higher than those in brown pine mountain soil
文摘:為了研究土壤溫度和土壤含水量對闊葉紅松林（山地暗棕壤） 、雲冷杉暗針葉林（山地棕針葉林土壤）和岳樺林（生草森林土）的土壤呼吸的影響，於2001年9月在長白山進行了土壤實驗.利用增加土壤樣柱的含水量，將土壤含水量分為9 ， 、 21 、 30 、 37和43 5個等級，土壤樣品分別在0 、 5 、 15 、 25和35的溫度下保持24小時.闊葉紅松林土壤在0 （ 35范圍內，土壤呼吸速率與溫度呈正相關.在一定的含水量范圍內（ 21 （ 37 ） ，土壤呼吸隨含水量的增加而升高，當含水量超出該范圍，土壤呼吸速率則隨含水量的變化而降低.土壤溫度和水分對土壤呼吸作用存在明顯的交互作用.不同森林類型土壤呼吸作用強弱存在顯著差異，大小順序為闊葉紅松林>岳樺林>雲冷杉暗針葉林.紅松闊葉林土壤呼吸作用的最佳條件是土壤溫度35 ，含水量37 ;雲冷杉暗針葉林下的山地棕色針葉土壤呼吸作用的最佳條件是25 ， 21 ;岳樺林土壤呼吸作用的最佳條件是35 ，含水量37 .但是，由於長白山闊葉紅松林，雲冷杉林和岳樺林處在不同的海拔帶上，同期不同森林類型土壤溫度各不相同，相差4 ~ 5 ，所以野外所測的同期的山地棕色針葉林土呼吸速率應低於暗棕色森林土呼吸速率，山地生草森林土呼吸速率應高於山地棕色針葉林土的呼吸速率.圖2表1參25 -
Soil incubation experiments were conducted in lab to delineate the effect of soil temperature and soil water content on soil respirations in broad - leaved / korean pine forest ( mountain dark brown forest soil ), dark coniferous forest ( mountain brown coniferous forest soil ) and ermans birch forest ( mountain soddy forest soil ) in changbai mountain in september 2001. the soil water content was adjusted to five different levels ( 9, 21, 30, 37 and 43 ) by adding certain amount of water into the soil cylinders, and the soil sample was incubated at 0, 5, 15, 25 and 35 for 24 h the results indicated that in broad - leaved / korean pine forest the soil respiration rate was positively correlated to soil temperature from 0 to 35. soil respiration rate increased with increase of soil water content within the limits of 21 to 37, while it decreased with soil water content when water content was over the range. the result suggested the interactive effects of temperature and water content on soil respiration. there were significant differences in soil respiration among the various forest types. the soil respiration rate was highest in broad - leaved / korean pine forest, middle in ermans birch forest and the lowest in dark coniferous forest. the optimal soil temperature and soil water content for soil respiration was 35 and 37 in broad - leaved / korean pine forest, 25 and 21 in dark coniferous forest, and 35 and 37 in ermans birch forest. because the forests of broad - leaved / korean pine, dark coniferous and ermans birch are distributed at different altitudes, the soil temperature had 4 - 5 variation in different forest types during the same period. thus, the soil respiration rates measured in brown pine mountain soil were lower than those in dark brown forest and those measured in mountain grass forest soil were higher than those in brown pine mountain soil
為了研究土壤溫度和土壤含水量對闊葉紅松林（山地暗棕壤） 、雲冷杉暗針葉林（山地棕針葉林土壤）和岳樺林（生草森林土）的土壤呼吸的影響，於2001年9月在長白山進行了土壤實驗.利用增加土壤樣柱的含水量，將土壤含水量分為9 ， 、 21 、 30 、 37和43 5個等級，土壤樣品分別在0 、 5 、 15 、 25和35的溫度下保持24小時.闊葉紅松林土壤在0 （ 35范圍內，土壤呼吸速率與溫度呈正相關.在一定的含水量范圍內（ 21 （ 37 ） ，土壤呼吸隨含水量的增加而升高，當含水量超出該范圍，土壤呼吸速率則隨含水量的變化而降低.土壤溫度和水分對土壤呼吸作用存在明顯的交互作用.不同森林類型土壤呼吸作用強弱存在顯著差異，大小順序為闊葉紅松林>岳樺林>雲冷杉暗針葉林.紅松闊葉林土壤呼吸作用的最佳條件是土壤溫度35 ，含水量37 ;雲冷杉暗針葉林下的山地棕色針葉土壤呼吸作用的最佳條件是25 ， 21 ;岳樺林土壤呼吸作用的最佳條件是35 ，含水量37 .但是，由於長白山闊葉紅松林，雲冷杉林和岳樺林處在不同的海拔帶上，同期不同森林類型土壤溫度各不相同，相差4 ~ 5 ，所以野外所測的同期的山地棕色針葉林土呼吸速率應低於暗棕色森林土呼吸速率，山地生草森林土呼吸速率應高於山地棕色針葉林土的呼吸速率.圖2表1參25 -
In views of hebei province ' s existing situation of rural economy, and with reference to the civil and abroad achievements in scientific research on the field, this thesis choose two sample groups - 11 cities and 138 counties of hebei province in light of division into districts and analyses the rural economy difference of hebei by using total and mean index, the social product gross of rural, rural labor productivity, the mean net income of rural, and methods of variation coefficient, comprehensive index and so on.
針對河北省農村經濟發展的現狀，本文借鑒國內外區域經濟差異的有關研究成果，以現行行政區域為基礎，通過截取河北省11個地市和138個縣（市）兩組不同的樣本，選取總量指標農村社會總產值，人均指標農村人均社會總產值、農村勞動生產率、農民人均純收入，運用變異系數、綜合指數等方法對河北省農村經濟的差異進行分析。 -
The possible factors including the deviation of temperature in length and breadth of rod, the changes of transfiguration resisting force under the changes of temperature, the adjustment of roll gap, the variation of rolling pressure, the changes of roller speed during dynamic adjusting press, the unmatched of seconds - flux under the dimension fluctuation of the coming sample and so on. the whole system was a closed loop which factors in it interacts each other
可能的影響因素有:沿軋件縱橫向溫度變化、由溫度引起的軋件變形抗力變化、軋機輥縫值變化、負載變化、電機調節系統由不穩定向穩定過渡過程中軋輥轉速的變化（如咬鋼過程中的動態速降后的回復階段） 、來料尺寸波動造成秒流量不匹配等，整個模擬系統是各個因素相互影響關聯的一個閉環系統。 -
Section five deals with data analysis and discussion which are divided into five steps : 1 ) the data are processed on spss ( 11. 0 ) and the forms of descriptive analysis, t - test and regression analysis are obtained ; 2 ) to understand the general distributive tendency of the data involved, descriptive analysis is made ; 3 ) an independent - sample t - test is made as well to find out the district variation in affective disorders ; 4 ) another independent - sample t - test is made to identify the gender distinctions of affective disorders ; 5 ) a regression analysis is conducted to understand the relationship between the achievements and the affective disorders
數據分析和討論分五步進行： 1 ）作出描述性統計、 t檢驗及回歸分析表； 2 ）為了解所採集的數據的總體分佈趨勢，論文首先對情感障礙的數據和對學生的測試成績進行了描述性統計分析； 3 ）用獨立樣本t檢驗分析了城市與農村學生英語學習時受情感影響的差異； 4 ）同樣用獨立樣本t檢驗分析了男女生英語學習時受情感影響的差異； 5 ）對情感障礙與考試成績作了相關分析。 -
The third part in this article has discussed the method which is based on the expectation frequency and use which we get the design value of 1 % and 0. 1 % for some universes. and we also get the correlation diagram of cs and calculation frequency of different sample sizes. then we analyze the variation rule to get the primary discussion for the theory study and production
本文第三篇討論了基於期望概率概念推求各種總體相應於1及0 . 1的設計值的方法，並且得到不同樣本容量的cs和計算頻率的相關圖，分析其變化規律，為理論研究及生產應用作一些初步探討。 -
About the confirmation of the position evaluation factors scale, the thesis has put forward using the fuzzy analytic hierarchy process ( fahp ) to evade subjective factor influence and make the position evaluation system more scientific. the thesis makes use of mathematics tools, such as the standard deviation of the sample, variation coefficient, etc. to analyze the deviation that the judge panel give a mark, and carry on effective correct ing
其中在崗位評價因素權重的確定問題上，提出藉助模糊層次分析法（ fahp ）的系統理論來規避主觀因素的影響，使崗位評價體系的設計更趨科學化；還利用樣本標準差、變異系數等工具來分析評委打分的偏差，進行有效的糾錯處理。 -
Abstract : according to the variation in content of characteristic radioactive nuclide and the close relationship between high - grade associated elements in ore - forming components and gold, the ground gamma - ray spectrometry and x - ray fluorescence slectrometry can be used to reveal the existence of gold mineralization rapidly in field and make semi - quantitative evaluation of gold grade. this is of great significance in guiding field geological sample collection and mountain land engineering
文摘:通過測定特徵放射性核素的含量變化以及利用成礦組分中一些高品位共生元素與金密切的相關關系，可利用地面伽馬能譜與x熒光測量在現場快速揭示金礦化的存在，同時對金的品位進行準定量評價，以及指導野外地質采樣和山地工程。 -
A list of some of the most common infinitives, along with a sample variation, as well as their past participle forms, appears in the table below
希望這篇義大利語不規則過去分詞能對你的外語學習有所幫助。 -
Four arrays of apparent resistivity are arranged at this measuring surface of granite sample symmetrically with symmetrical four - electrode method, and at an angle of 45 between any two adjacent arrays. the elastic constraint is exerted on 4 surfaces for parallel to the longest dimension of the sample. the samples are compressed along the direction parallel to the longest dimension of the cubic, and the variation of apparent resistivity during the whole loading process is observed
在花崗巖標本測量面上，布設4條夾角互為45的視電阻率測線，將標本平行長軸方向的4個面加上彈性約束，沿標本長軸方向加壓，測量標本視電阻率隨軸向應力的變化，實驗結果為： 1巖石視電阻率變化形態顯上升-平穩-下降形態，但平穩段不明顯，時間很短2視電阻率開始下降時間，比其他受力方式實驗結果都早，約提前10 %破裂應力。 -
By measuring the brdf of a kind of typical material - granite, sample ' s hemisphere reflectivity has been acquired and the law of its dependence on the zenith - angle and azimuth - angle variation has been studied
摘要對以大理石為代表的材料進行了雙向反射分佈函數測量實驗，得出了樣品的半球反射率，並研究了其隨入射、反射天頂角等參數變化的規律。 -
This paper also analyzes the fore - and - aft behaviors of earnings and rising ability about different chinese listed companies with reverse change in p / e ratio. through analyzing the net profit and operating cash flow variation trend of sample and control sample companies, this paper finds that the performance of the company with 3a after the reverse change in p / e ratio
通過樣本與控制樣本凈利潤和經營活動現金流差異的趨勢分析，發現3a公司在市盈率反轉后表現稍遜于反轉前，基本上反映了3a公司進行的是投機性的盈餘管理行為; 3d公司在市盈率反轉后表現優于反轉前，也說明了3d公司進行的是信息發放性的盈餘管理行為。 -
3. the variation of the number of the principle components, shape, physical meaning and the explainablity with the change of calibration data and the sample complexity is systematically studied for the first time
首次系統研究了隨著樣品成份復雜性的變化以及光譜數據預處理方法和波長區域的不同，主成分的個數、意義及其可解釋性的變化情況。
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