descending curve 中文意思是什麼
descending curve
解釋
下降曲線- descending : adj 下降的，下行的；遞降的。 a descending letter 下垂字母 〈g p y 等〉。 descending powers 【數學...
- curve : n 1 曲線；彎曲；彎曲物。2 曲線規 （＝French curve）；【機械工程】曲線板；【棒球】曲線球；【統計學...
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The stress - strain curve of new - old concrete and hprrc, are suggested to be modeled by two sections : the ascending section of the stress - strain curve is simulated by cubic parabola equation and the descending section is simulated by rational fraction, where the theoretical value is in good agreement with the test value. the research results also provide a theoretical basis of earlier stage for improving crack resistance of new - old concrete interface
新一老硅及hprrc應力一應變全曲線建議採用兩段式擬合:上升段採用三次拋物線方程模擬，下降段採用有理分式模擬，理論值與試驗結果吻合較好。該研究成果為新老混凝土結合面抗裂能力的提高提供了前期的理論基礎。 -
The curve of h1was descending, and the others soils were ascending during prophase of rainfall, descending after 10min
從濺蝕率歷時過程看， h1濺蝕率呈下降趨勢，其餘土樣的濺蝕率在降雨初先升高， 10min後下降。 -
The results of different particle size aggregates showed that, the curve of splash erosion of aggregates of < 0. 25mm was slowly ascending during the rainfall process, whereas, according to > 0. 25mm, the curve was ascending during prophase of rainfall, then descending
不同粒度團聚體的濺蝕實驗表明， 0 . 25mm的微團聚體，其濺蝕率歷時曲線呈緩慢降低的態勢；而0 . 25mm大團聚體，則是先升高再降低。 -
Feature extraction through 2 - order polynomial fit of the descending part of the response curve made possible a timesaving measurement process. the performances of two pattern recognition algorithms, namely principal component analysis ( pca ) and linear discriminant analysis ( lda ) in practical problems were discussed. artificial neural network ( ann ) was utilized with back - propagation algorithm ( bpa ), and the combination of pca / lda with ann improved the identification performance of the system
基於對模式識別系統的深入研究，提出了從響應階段數據提取特徵的方法，節省了測試所需時間；比較了主成分分析法（ principalcomponentanalysis ， pca ）與線性判別式法（ lineardiscriminantanalysis ， lda ）兩種模式識別方法在實際應用中的不同結果，分析了原因；設計了採用誤差反傳演算法back - propagationalgorithm ， bpa ）的前向人工神經網路（ artificialneuralnetwork ， ann ） ，並指出其應用中存在的問題，提出了改進建議；利用pca lda與ann相結合的方法改善了系統的識別性能。 -
The two characters sharply enhanced the rate of sediment, then h1 descending, and there were several peaks in the curve of h2. the fine structure and stable aggregates deferred the destroy of soil surface structure, and the change of sediment was slow
這兩個特徵導致h1 、 h2在產流開始后的12min內，產沙率迅速上升，隨后h1產沙率緩慢波動下降， h2產沙率出現幾個峰值。
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