quantity variance 中文意思是什麼
quantity variance
解釋
數理差異-
In this research, the lime - fly - ash bound macadam was joined with steel fibers, glass fibers and polypropylene fibers with the contents of the lime, the fly ash and the macadam fixed in lab tests. the study focuses mainly on the split strength, compression strength, and modulus of compressive resilience and shrinkage property of the lime - fly - ash bound macadam enhanced by different kinds of fibers. based on the test, a detail theoretical analysis was made on the relation of mechanical property, dry shr inkage with the variety and the quantity of fibers, applying the theories of strength, dry shrinkage and the methods of statistics, curve mimesis and variance analysis
本論文主要是研究在同一種二灰碎石混合料（石灰、粉煤灰、集料的含量及比例相同）中分別摻入不同數量的鋼纖維、玻璃纖維、聚丙烯纖維，通過室內試驗對其抗拉強度、抗壓強度、抗壓回彈模量和乾燥收縮性能與纖維摻量和纖維品種之間的關系加以分析和研究，並在此基礎上根據二灰碎石強度形成機理、乾燥收縮機理和數理統計、曲線擬合、方差分析的方法分析纖維品種和纖維數量對二灰碎石的力學性能和乾燥收縮性能的影響，最後得出纖維對二灰碎石的強度、抗壓回彈模量、乾燥收縮有很顯著的影響，並提出了相應的建議。 -
Aiming at the ecological environmental deterioration of bashang, from 2002years to3 ~ 5months of 2003 years. sand - transporting quantity of land cover types were on - the - spot moinitoring in gale seaon, comparing the productivity of the main crops. improving environment and developing economy are compositively considered for applying returning cultivated to woodland and grassland to supply the base of theory and technology. the main results as following : 1 observing the sand transporting quantity of artificial grassland, stubble land and cultivate land. indicates that when wind speed is higher ( 8. 0m / s ), the sand transporting quantity of artificial grassland of 200cm reduces 35. 5 % in average more than that of cultivate land, 34. 5 % sand - transporting quantity than that of stubble land. no distinct difference between stubble land and cultivate land. and when wind speed is lower ( = 5. 0m / s ), the sand - transporting quantity of coverage is no distinct difference according to the analysis of variance
從改善環境和發展經濟兩方面綜合考慮，為實施壩上地區「一退雙還」提供了理論與技術依據。主要研究結果如下： 1對人工草地、作物留茬地及耕翻地的輸沙量觀測表明：勁風（ 8 . 0m s ）下，人工草地比對照耕翻地輸沙量在200cm高度內平均降低了35 . 5 ，比作物留茬地平均降低了34 . 5 ；作物留茬地輸沙量與耕翻地差異不顯著；微風（ 5 . 0m s ）下，不同地表覆被類型對輸沙量的影響差異不顯著。 -
An efficiency variance reveals the effect on total cost of using more or less input than the quantity allowed by the flexible bud ? get for actual output
效率差異反映了相對于實際生產所發生的投入量多餘或少於彈性預算的規定量時總成本的變化情況。 -
Multivariate regression empirical bayes approach can obtain excepted values and variance from accident model, hence it can overcomes the limitation of empirical bayes approach which needs great quantity of similar road cells
多元回歸經驗貝葉斯法利用事故模型來獲得事前分佈的均值和方差，從而克服了經驗貝葉斯法需要大量參照道路單元的缺陷。 -
The present methods for testing the large - scale corpus segmentation have the following faults : a. it is difficult to exactly estimating the variance of population ; b. the sampling quantity is too large to test the corpus segmentation. to solve the given problems, we put forward the testing method based on clustering, which sorts the sample of corpus into many group by clustering them
語料庫分詞質量的評價問題是漢語語料庫的特有問題，已有的簡單隨機抽樣的方法，當語料庫規模變大時，無法精確估計分詞質量評價中語料庫樣本的總體方差，同時，為了保證檢驗的精度，傳統抽樣方法的檢驗費用太高。 -
The following merits can gain by using the clustering method : a. the sampling quantity can be reduced by using the method to test the segmentation of the large - scale corpus ; b. the testing precision can be improved and the variance of population can be estimated more exactly
與已有的簡單隨機抽樣方法相比，本文提出的方法在大規模語料庫分詞質量評價時，有如下優點； a通過聚類得到語料庫抽樣樣本分詞正確率的分層知識，進而在檢驗中運用分層抽樣帶來的增益減少檢驗的費用： b -
Coordinate with related departments to resolve the price and quantity variance between computer record and vendor invoice
協調各個相關部門，以解決系統的記錄和供應商發票之間在價格和數量之間的差異。
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