second-order calculation 中文意思是什麼
second-order calculation
解釋
二級近似計算- second : adj 1 第二的；第二次的；二等（的）。2 次等的；較差的；劣於…的 （to）。3 〈美國〉較年輕的。4 另一...
- order : n 1 次序，順序；整齊；（社會）秩序，治安；狀況，常態；健康狀態；條理；會場秩序；議事程序，日程；...
- calculation : n. 1. 計算，計演算法。2. 推定，預測。3. 深思熟慮，精打細算；慎重的計劃；算計。
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Practical calculation of second - order displacement of a frame structure
框架結構二階位移實用計算 -
A multi - block incompressible viscous flow solver has been developed that can be applied to simulation of a variety of ship maneuvering related flows and calculation of hydrodynamic forces. validation and verification of the solution procedure are carried out on several model problems with good agreement to experimental and numerical results. the present block - structured viscous flow solver is based on solving the reynolds - averaged navier - stokes ( rans ) equations with a second - order cell - centered finite volume method ( fvm ) on non - staggered grids
本文即在這種背景下，瞄準船舶操縱水動力預報方面的國際前沿和熱點課題，通過對現代船舶粘性流計算方法的研究，自主開發了一個船舶操縱粘性流求解器，並將所開發的求解器成功地應用於一系列和船舶操縱問題相關的粘性流動與水動力計算，得到了令人滿意的結果。 -
Abstract : the time - variant reliability analysis of ship hull girders subjected to the deg r adations of fatigue and corrosion is quantitatively carried out in this paper. th e analytical formulations are derived and simple program is compiled. as a case s tudy, the time - variant reliability of a vlcc tank is calculated. it shows that th e degradation effects of fatigue and corrosion are very important for the load - c a pacity calculation of thsip hull girders. after the second special inspection ( 10 years ), the detailed inspection should be done in order to guarantee the safety of ship navigation
文摘:定量考慮船體構件疲勞裂紋擴展和環境腐蝕對船體梁承載能力的雙重衰減因素的影響，對船體梁的時變可靠性進行了分析，列出了時變可靠性分析公式並編制了相應的計算程序.以一艘大型油船的結構可靠性為例，表明疲勞裂紋和環境腐蝕在第二個特檢年（ 10a ）之後對船體梁承載能力有顯著的影響，此時開展詳細的船體結構檢查對保證船舶營運的安全性具有重要的意義 -
Different results specify that the first kind of cost function is sensitive to the mismatch of ocean depth and receiver location, but is insensitive to sound speed profile ' s % $ jai8x9 @ t $ m & z mismatch and has high accuracy of depth localizaion ; the second kind of cost fimction is insensitive to all three kinds of mismatch, but its resolution of depth is very low ln order to overcome the cost function ' s sensitivity to mismatch, improvemedt of the accuracy of time delay estimation and model calculation may be adopted, when both conditions are reached, the sensitivity wiil be greatly reduced and the resolution of range and depth will be improved at the same time
模擬結果表明，第一類代價函數對海底深度和基陣傾斜失配是敏感的，對聲速失配卻不敏感，並且能夠獲得較高的深度定位精度；第二類代價函數對三種失配都不敏感，只是深度解析度較低。為了克服代價函數對失配的敏感性，可採用提高時延估計精度和模型計算精度的方法。當兩個條件滿足時，敏感性得到極大的抑制並獲得了較高的距離和深度估計精度。 -
Calculation of time domain of second order wave diffraction in three dimensions with finite element method
三維二階水波繞射問題的有限元時域計算 -
Calculation of the bolt binging reliability based on improved linear second order moment
用改進的一次二階矩法求螺栓聯接的可靠度 -
This paper is based on the pingpong bridge field ground protection, it presents one point to ground protection scheme which include the self - checking method of switches. the two point to ground protection scheme presents self - adapting fault location warp criterion after evaluating the effect on the calculation of fault location made by the change of transient resistance in the process of bridge switch. in order to make up the shortcoming of location warp criterion, this paper presents a comprehensive scheme into which integrate the second harmonic criterion
本文針對乒乓式保護，結合開關自檢方法提出了完整的一點接地保護方案：在兩點接地保護方案中估算了開關切換過程中過渡電阻變化對接地點位置計算的影響，提出了故障位置偏差式兩點接地的自適應判據，為了彌補該判據的缺陷，提出了結合二次諧波輔助判據的綜合方案。 -
But the conventional structural approximate analysis methods based on the first - order or the second - order derivatives of the stresses and the displacements of structures are not global, while an efficient global structural approximate analysis methods is helpful to decrease the number of the times of structural analysis, so the amount of calculation of structural analysis in the structural optimum design is reduced
但是常用的基於結構應力、位移的一階和二階導數的結構近似分析不具備全局性，而有效的全局性的結構近似分析可有效地降低結構分析次數，從而可減少結構優化設計中結構分析所需的計算量。 -
The numerical simulation of the cabin indicates : the normal k - model is adaptive to simulate the air flow ; the simplen algorithm can satisfy the requirement of calculation for its rapid convergence velocity ; the second order accurate supg in advection discretization scheme can attain more precise result
模擬結果得出如下結論：標準k -模型對系統流動模擬是適合的； simplen演算法收斂更快，滿足運算的需要；採用二階supg的對流項分離方案可以獲得更高的計算精度。 -
Based on the exact equivalence second - order model of multi - machine using detail model of generator, an electromechanical calculation method is put forward. this method connects the fuzzy block - decoupling method and the selective modal analysis method
本文利用基於發電機詳細描述的多機系統精確等效二階模型，提出了模糊分塊解耦法與選擇模式分析法相結合的機電模式計算方法。 -
The selective modal analysis method ( sma ) based on the tradition equivalence second - order model achieves the reduced - order calculation for the electromechanical modes, but its calculation precision is n ' t higher and sometimes it may lose eigenvalues
基於傳統等效二階模型的選擇模式分析法，雖然實現了多機系統機電模式的降階計算，但存在著計算精度不高和特徵根「丟失」現象。 -
And before second - order drift limits have been established, the equations about second - order drift calculation which can be used in practice are required to be set down first
在確立二階側移限值之前，則需要先明確能應用於工程實踐的二階側移計算公式。 -
On the basis of building power function by the reliability theory, comparison and analysis of the two methods of losm ( linear second order moment ) are made on the solution to the power function, and check calculation is carried out on the slope reliability index
摘要在利用可靠度理論建立功能函數的基礎上，對功能函數的求解進行了一次二階矩兩種方法的比較與分析，並對邊坡的可靠指標進行了驗算。 -
Structurally, the classification of all the items in second subdirectories is not correct ; 2. after an analysis on the classification of second - order items, it finds out the calculation mode classification of quality cost is not integrated, only some blurring items, which will directly affect the amount of quality cost ; 3
本文首先對華龍集團長春分公司目前所運用的質量成本模型進行了系統、深入的研究，發現現有質量成本模型結構不合理，數據分類不正確，得出的質量成本數據不準確，不能有效反饋質量成本信息，指導質量管量工作。
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