heat diffusion 中文意思是什麼
heat diffusion
解釋
傳熱-
Combined heat and mass transfer by natural convection which is caused by heat and mass diffusion can be seen in nature and some processes of industry, such as evaporation and desiccation. these processes relate to aeronautics, hydraulics, mechanics, chemical engineering, oceanography and aerography
熱及物質擴散引起的傳熱傳質復合自然對流常見于自然界和蒸發、乾燥等工業過程，涉及到航空、水利、機械、化工、海洋、氣象等諸多領域，其流體力學和傳質傳熱特性一直是人們研究的重點。 -
For a soil or rock of water - lacked, a heat transfer theoretical model is developed, which is a steady or unsteady, the results show that reservoir temperature, thermal diffusion coefficient, inlet temperature, flow rate of and run time of ground source heat pumps have an effect directly on heat transfer process of dhe. it can deduce that intermit running is favorable for this type of soils and rocks
對于貧含水地下巖土層建立了穩態與非穩態傳熱的理論模型，分析結果表明，巖土層的熱儲溫度、導溫系數、埋地換熱器進水溫度、流量以及地源熱泵系統的運行時間或開停機比，都對埋地換熱器的傳熱過程產生直接影響，可以推斷，對于該類型巖土層的地源熱泵系統，採用間歇運行將是有利的。 -
In this paper, three unique models were designed to research atom diffusion at interface, contacting line and joining point under bpec heating and compare with it under radiation heating in order to find out if bpec speed atom diffusion. the first model was aimed to research atom diffusion at interface under bpec heating. experiment condition of bpec diffusion welding sheet cu and ni : direct diffusion welding, at a pressure of l0mpa, welded at 750 ~ 900, with heat rate of 200 ~ 400 / min for 10mm, on / off of 6 / l ~ 48 / 8, with die or not, vacuum of 6pa
本文設計出三種樣品預構件，研究脈沖大電流加熱條件下片狀材料、線狀材料和球形顆粒之間的原子擴散過程，弄清脈沖大電流加熱條件下原子擴散與一般燒結和焊接過程中原子擴散的區別，以證實特殊的電場和磁場是否對原子的擴散有推動作用，揭示脈沖大電流加熱條件下原子的擴散過程，探索脈沖大電流熱加工技術快速高效的原因。 -
Pulse electric current heat treatment ( pecht ) developed by sodick, ltd., of japan, is a recently developed material processing method which consists of spark plasma sintering and welding, plasma activated sintering and welding, big pulse electric current ( bpec ) diffusion welding etc. the following are basic merits of pecht : rapid heating and cooling ; short sintering or welding time ; lowering sintering or welding temperature
脈沖電流熱加工（ pulseelectriccurrentheattreatment ，比如燒結，焊接等）是九十年代發展起來的一種材料快速制備新技術，它包括放電等離子燒結與焊接、等離子活化燒結與焊接、脈沖大電流擴散焊接等。它具有升溫、降溫速度快、能在較低的溫度下燒結或焊接以及時間短的特點。 -
A transfer model is established, which can be used to study the interaction between the land surface physical processes of inhomogeneous region and the structure of atmosphere boundary - layer over urban and rural terrains. the model has simulated surface heat flux, surface temperature, temperature profiles, height of mixture layer and so on. and the differences between urban area, suburban area and rural area have been compared. this model mainly depends on the parameters below : surface albedo, surface roughness coefficient, moisture available coefficient of soil, thermal capacity and thermal diffusion coefficient of errain, cloudage. the result shows that this model can simulate the structure and eigenvalues of atmosphere boundary layer and their changes in a day. parameters used in this model aim at beijing city, and the time is at the beginning of september. to other cities, or other time, the parameters should be adjusted accordingly. in addition, being adjusted, the model can also be used for other homogeneous and inhomogeneous terrains
模式主要依賴于以下參數和物理量：地面反照率下墊面粗糙度土壤的可含水量下墊面的熱容量和熱擴散系數雲量等參數。結果表明，本模式能合理地模擬不同地表熱量平衡地表氣溫混合層高度湍流交換系數湍流動能位溫廓線等，以及它們的日變化。該模式所取參數主要針對北京市，時間為九月初，對于其他城市，參數應作相應的調整。 -
In chinese medicine theory, the pathogenesis of bph is associated with qi transformation of the triple burner, impaired diffusion and downbearing of the lung, unable to govern regulation of the waterways, the splenic transformation failure and unable to upbear the clear and downbear the turbid, damp - heat pouring down into the bladder, kidney vacuity and yang debilitation, qi transformation disturbance of lower burner, so the bph is caused by the disturbance of qi transformation in the lung, spleen and kidney triple burner
前列腺增生病的發病機理，中醫學認為與三焦氣化功能有關。肺失肅降，不能通調水道下輸膀胱：脾失健運不能升清降濁，濕熱下注膀胱腎陽虛衰，下焦氣化失司，致開閡不利。故前列腺增生病是肺脾腎三臟三焦氣化失調所致。 -
These concrete works are the following : 1, a new heterogonous shs model had been proposed, which first included all the relative materials characters, such as reactants particle sizes, changeable heat - conductivity and mass diffusion during shs and so on, and its chemical reaction characters, initial combustion status
具體工作如下： 1 、提出了微觀不均勻的燃燒介質模型，在此基礎上完成了對非均質燃燒模型數學化的研究，並提出了「燃燒基團」模式，解決了模型數學分析量大的難點。 -
2 ) from the analysis of the aerodynamic parameters and turbulent flux transfer under different synoptic conditions we achieve the conclusion that on sands raising and sandstorm days turbulent momentum and sensible - heat fluxes are important exchange factors in the boundary layer, with turbulent exchange stronger in sandstorm weather than both on fine and sand raising days. prior to the occurrence of such an event, in particular, the super - adiabatic instability in the near - surface boundary will reinforce sandstorm weather condition. 3 ) atmospheric turbulent diffusion parameters z and y have apparent daily variation
沙塵天氣下以親地殼元素為主的氣溶膠元素濃度均高於背景大氣和浮塵天氣，而且沙塵天氣強度愈強，元素濃度的增加愈顯著；背景大氣、浮塵天氣條件下親地殼元素的濃度一般在10 ~ （ - 1 ） 10 ~ 0 g m ~ 3量級，揚沙、沙塵暴時一般達10 ~ 1 g m ~ 3量級，特強沙塵暴時高達10 ~ 2 g m ~ 3量級。 -
Based on ladle refining, wide flat anvil forge with great forging ratio, heat treatment process of " normalizing + spheroidizing + diffusion hydrogen ", the cold roll blank has been forged succesfully, and the percent of pass is up to 90. 5 %
採用鋼包精煉爐冶煉、寬平砧大壓下量鍛造、 「正火+球化+擴氫」的熱處理工藝，成功製造了冷輥坯，合格率達90 . 5 。 -
Abstract : based on ladle refining, wide flat anvil forge with great forging ratio, heat treatment process of & quot; normalizing + spheroidizing + diffusion hydrogen & quot;, the cold roll blank has been forged succesfully, and the percent of pass is up to 90. 5 %
文摘:採用鋼包精煉爐冶煉、寬平砧大壓下量鍛造、 「正火+球化+擴氫」的熱處理工藝，成功製造了冷輥坯，合格率達90 . 5 。 -
Insulation used to prevent heat diffusion, as from a steam pipe
絕熱材料用來防止熱量散失的絕熱材料，如從蒸汽輸送管上 -
By thermal conducting method and the finite difference method, we also analyzed the heat diffusion in different material structures
我們分析了材料結構、脊波導高度、材料波導層及雙異質結上限制層厚度和折射率。 -
A lot of results are made from calculating of case for geothermal reservoir property of earth energy within 200 2000 ( m. ) ， it is helpful to analysis influence of permeability coefficient, kinematic viscosity and thermal diffusion coefficient of soils and rocks on heat transfer performance
在地表熱能熱儲物性為200 - 2000 （ m . ）的范圍內進行的理論計算，得到了許多重要結果，為分析巖土層滲透系數、流體運動粘度和導溫系數等對傳熱量的影響打下了良好基礎。 -
In order to simulate the construction process and the effect of concrete pouring temperature and outside temperature on temperature field and thermal stress field in the dam, temperature field and thermal stress field are calculated layer by layer. the calculation step during construction is 0. 25 day, and during operation the diffusion of hydration heat of concrete is over and elastic modulus is basically stable, changeable step is used
為了研究施工進度、混凝土澆築溫度、外界溫度對壩體溫度場和應力場的影響，按碾壓混凝土施工方法每澆築一層（層厚0 . 3m ，澆築時間6小時）計算一次溫度場和應力場，這樣，施工期計算步長為0 . 25天，運行期因混凝土水化發熱已結束，且彈模基本穩定，故採用變步長計算。 -
Meaning of ions diffusion coefficient in sapphire diffusion heat treatment
離子擴散系數在藍寶石擴散熱處理改色中的作用 -
Vacuum diffusion welding of refractory steel to heat resistant alloy was investigated in this paper. the effect of welding parameters on the deformation ratio of joints was examined
針對耐熱合金與耐熱鋼的真空感應擴散焊，研究了擴散焊連接工藝參數對接頭變形率的影響、接頭變形率與接頭性能的關系以及不同接頭變形率的微觀形態。 -
As experiments reveals, the moisture diffusion, heat conduction and mechanical response in polymers are mutually affecting behaviors
有試驗發現，高聚物中濕分、溫度和應力是相互影響的。 -
Then the mathematical problem of nonlinear heat diffusion with temperature dependent thermal conductivity has been derived during laser irradiation of two - layer structures. to solve this problem, a kirchhoff transformation and further time variable transformation has been used
於是，文中還用有限容積法將溫度場定解問題離散化，選擇合適的空間網格和時間網格，通過matlab編程實現對四維溫度場的數值模擬。 -
At last, the non - fourier heat diffusion in coal particles are investigated by calculations. two non - fourier heat diffusion models of cv model and dpl model are applied, the calculation results of different model are compared. the influence of the non - fourier heat diffusion effect on the temperature history is discussed
首次利用非經典導熱理論的兩個模型? cv模型和d - p - l模型對快速升溫過程中的單顆粒煤粉的溫度分佈及歷程進行了計算，探討了非傅立葉導熱效應對no還原效率的影響規律，發現考慮快速升溫過程中煤粉的非傅立葉導熱效應后，計算結果更接近實驗結果。 -
The characteristic of combined heat and mass transfer by natural convection has been the focus of researches for a long time. numerical analysis is conducted for combined heat transfer and mass transfer by natural convection on inclined surface. effects of the inclination angle and the ratio of buoyancies due to heat diffusion and mass diffusion on fluid flow and heat and mass transfer characteristics have been investigated for pr = 0. 7 and sc = 0. 05 - 5. 0
本文採用數值計算方法研究了傾斜平面上的傳熱傳質復合自然對流，求解了動量、能量及質量的完整方程，考察了熱質擴散共存時傾斜平面上的流動和傳熱特性，著重分析了熱浮力及物質擴散浮力之比b和傾斜角度對流體流動和傳熱傳質特性的影響。
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