natural boundary 中文意思是什麼
natural boundary
解釋
自然邊界-
The last two integrals correspond to the natural boundary conditions.
最後兩個積分對應于自然邊界條件。 -
At first, this research summarizes and analyzes the natural zoology conditions, such as district ’ s boundary, geography position, climate characteristics, geologic and appearance, soil, vegetation and so on, social economy, the whole developing situation of the stockbreeding in the yellow river delta area. the result is : the yellow river delta is the area with a specific zoology system and rich natural resource. the proper geological environment, favorable climate conditions offer the advantaged conditions for the growing of pasture and feedstuff, the big superficial natural and artificial grass land and a large number of cropper straws establish a good material base for the vegetarian especially for sheep
1 、通過對黃河三角洲地區的區域界定、地理位置、氣候特徵、地質地貌、土壤植被等自然生態條件，以及社會經濟狀況、畜牧業整體發展情況進行分析，結果表明:黃河三角洲是一個具有獨特生態系統和豐富自然資源的地區，該區特有的地質環境、良好的氣候條件為牧草及飼料作物的生長提供了有利條件，大面積的天然草場和人工草場以及大量的農作物秸稈為食草家畜，特別是羊的大發展奠定了良好的物質基礎。 -
Meshless method based on natural boundary element
自然邊界元的無網格方法 -
The government should not hastily build a cross - boundary road link that might affect the natural landscape in sai kung
政府不應倉卒地興建跨界公路，影響西貢的自然景觀。 -
Consequently, on the basis of non - winkler foundation model, a finite - element method that utilizes foundation flexibility matrix into iterative calculation is proposed in this paper originated from the item " the optimal design theory and research of pile capping beam " sponsored by natural science fund of hunan province, which the continuity of soil mass can be accounted for under various boundary conditions, different loadings and irregular beam characters
本文結合湖南省自然科學基金項目「樁基承臺梁優化設計理論與方法研究」 ，針對非文克爾地基（半空間、線性變形層或單向壓縮層地基模型等）上的樁基承臺梁，提出一種利用地基柔度矩陣來進行迭代的有限單元法，可充分考慮梁下土體的連續性，並對基礎與土體脫開、承臺梁截面變化、梁體邊界條件復雜、上部荷載類型變化以及梁下基樁承載力差異等情況進行分析計算。 -
It builds a physical model according to hoisting capacity, lifting angle and structural stabiliy, theory, solves the problem of function relationships among lifting capacity, lifting angle, boom weight, boom dimension and deduces the natural boundary condition of design parameters, providing a new way to determine crane design parameters
摘要將起重量和起吊幅度為基本設計依據，以壓桿穩定理論為分析基礎，結合專業知識，建立物理模型，解決了起重量、起吊幅度與吊臂質量、吊臂主要參數之間的函數關系的難題，首次確定出設計參數的自然邊界條件，為起重機設計者提供了確定設計參數的新方法和科學依據，具有開創意義。 -
The instability in the natural convection boundary layer initiates with the buoyancy eigenmode and develops into non - linear stage with the turbulization of the buoyancy eigenmode. in the mean time, the invisid eigenmode at the inflexion point appears and begins to increase at the outer layer. experimental results show that the turbulent layer near the maximum velocity point can be detected while the reformed grashof number
自然對流邊界層的穩定性由浮力振型失穩開始，並隨著浮力振型的湍流化進入非線性階段，與此同時，無粘性振型在外層開始失穩。實驗結果表明，修正格拉斯霍夫數grashof -
The project of the experimental and theoretic research on friction reduction by microbubbles for high - speed ships, supported by the national natural science foundation of china ( no. 19772050 ), aims to study the key technology of air - jetting devices and its relevant problems, theoretically predict the law of bubble diffusing in the boundary layer and calculate the friction of the hull
國家自然科學基金項目「高速氣泡船減阻試驗及理論研究」的目的在於研究高速氣泡船噴氣裝置的關鍵技術及其相關問題，並從理論上預測噴氣氣泡在船底邊界層的擴散規律和計算船體摩擦阻力，為將這一技術應用到實船上提供基礎。 -
Is always aligned to a natural boundary on the target machine
總是與目標計算機上的自然邊界對。 -
The natural boundary of random series
隨機級數的自然邊界 -
Natural boundary condition
自然邊界條件 -
Application of natural boundary element method to the bending problem of the elastic thin circular plate
自然邊界元法在彈性圓形薄板彎曲問題中的應用 -
In this paper, through the idea of domain decomposition method and the theory of natural boundary reduction, we study overlapping domain decomposition method and non - overlapping domain decomposition method for elliptic boundary value problems in an infinite domain
本文藉助區域分解思想並基於自然邊界歸化理論，研究無窮凹角區域橢圓邊值問題的重疊型和非重疊型區域分解演算法。 -
Origin of turbulence in natural convection boundary layer
自然對流邊界層中湍流的發生 -
In the models, the time dependent parabolic equations, deduced from the mild slope equations with currents or not, are used as the governing equations. based on the general conditions for open and fixed natural boundaries with an arbitrary reflection coefficient and phase shift, the boundary conditions for the present models are treated. the alternative direction implicit method is used to solve the governing equations and the numerical schemes are unconditional stable
在建立模型時，將原始的橢圓型緩坡方程的近似型式? ?依賴時間變化的拋物型方程，作為控制方程；從將開邊界條件、不同反射特性的固壁邊界條件相統一的表達式出發，對邊界條件進行處理；用adi法數值求解控制方程，格式無條件穩定；節省了計算機內存和計算量。 -
In this paper, an algorithm based on watershed transformation and fuzzy logical catchment basins combination is proposed to suppress or remove the feature of natural background, and applied to infrared object boundary detection and labeling
文中在分水嶺演算法的基礎上，結合模糊邏輯方法，對自然背景下的紅外人工目標的邊界檢測和分割以及紅外背景的抑制進行了探討。 -
The concept of gemm ( geology - engineering - mechanic model ) has been proposed in this thesis. gemm is a parameterized model consisted of representative units, boundary units ( including natural boundary and artificial boundary ), target parameters and key engineering information
提出了gemm模型的概念，將gemm模型定義為：由等價體單元、界面單元（包括天然邊界單元和人工邊界單元）以及各地質單元的目標參數構成的，包含有關鍵工程信息並可直接應用於分析判斷和數值計算的參數化模型。 -
The district is bounded by wo yi hop road and texaco road to the east. its western end extends to tsing lung tau, while the northern part covers the hilly areas of tai mo shan. its coastline provides a natural boundary to the south, but ma wan island and northeast lantau are also part of the tsuen wan district
荃灣東面以和宜合道及德士古道為界，西端伸展至青龍頭，北部則包括大帽山的山嶺，南面以海岸線為界，而馬灣和大嶼山東北部也屬荃灣區的范圍。 -
Starting from two well - accepted assumptions in theory of thin - walled beams, a general theory for linear analysis of curved beams with any open sections is established in this paper by using the principle of virtual work. the equations of equilibrium and natural boundary conditions are given
文章首先從薄壁構件理論的兩個基本假定出發，利用虛功原理，建立起一套精確的、可以應用於任意開口薄壁截面圓弧曲梁的線性理論，給出相應的平衡方程和邊界條件。 -
Abstract : a numerical model and experiments over pmma are used to evaluate the main assumptions used in the theoretical description of a diffusion flame established in a natural boundary layer. flow characteristics ( 2 - d boundary layer ) and surface thermal balance are identified as the critical assumptions to be evaluated. comparison of experiments, numerical results, and theoretical model serve to validate the assumptions leading to the definition of a mass transfer number but establish the need to model all three - dimensional features of the flow
文摘:對pmma進行數字模擬和試驗，對描述自然邊界層擴散火焰理論的假設進行評價.我們把流動特性（二維邊界層）和表面熱平衡作為評價的關鍵假設.試驗、數字模擬和理論模型證實了對質量傳遞數值定義的假設是正確的，但研究也表明，有必要對流動特性進行三維模擬
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