量綱不變性 的英文怎麼說
中文拼音 [liánggāngbùbiànxìng]
量綱不變性
英文
dime ional invariance-
This formula used inverse regression and data fusion technical and maximum likelihood theory, then this method enabled random sample value obtained in ultrasonic and rebound method of different detection population to mix together effectively, and reach estimation of concrete strength
該公式利用逆回歸理論、數據融合技術和最大似然原理,將回彈值和聲速值分別看作被解釋變量,將來自超聲法和回彈法不同量綱的檢測數據進行有效融合,得出混凝土強度的推定值,該推定結果具有無偏性和方差最小性質。In the test, the d / w has three values : 0. 2 0. 13 and 0. 7, we used the ratio of nu to nu0 to analyze the characteristics of the channel ' s heat transfer, used the ratio of f to f0 to analyze the characteristics of the channel ' s flow resistance. through the efficiency ( the was defined the ratio of nu / nu0to f / fo ) we measure the influences of different infinitude date on the channel ' s heat transfer, we found the results of the heat transfer : no 3 baffle is the best, no 5 baffle is better than model 8
在實驗選取d w的三個值0 . 2 、 0 . 13和0 . 7中,運用無量綱準則數nu nu _ 0隨re的變化曲線分析了通道強化換熱特性;運用f f _ 0隨re的變化曲線分析了通道的阻力特性;通過綜合開孔換熱效率衡量不同無因次量對通道的綜合強化換熱影響。
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