diffusion area 中文意思是什麼
diffusion area
解釋
擴散面積-
On the foundation of standardizing the conception of agrotechnical diffusion, this article indicates that the agricultural diffusion is an important method to quicken the transform of agricultural technology, a way for the science and technology to make the agriculture product be modern scientific, a mean to make progress of agriculture, rural area, and increasing the farmers ’ income
在對涉及技術擴散的概念進行規范的基礎上，說明了農業推廣是加快農業技術轉化的重要手段，是科學技術裝備農業，使農業生產現代化的途徑，也是實現農業發展，農村進步，農民增收的重要手段。 -
Along with development of mining in this region, abnormity of heavy - metal endogenetic geochemistry change to heavy - metal inchoative geochemistry, which lead to accumulation and diffusion of heavy metal in mine region of red soil and great red soil area, serious degradation of soil caused by heavy metal pollution, and mine ecological system destroy
隨著有色金屬采礦業的發展，重金屬的內生地球化學異常轉化向表生地球化學異常。由此，使紅壤礦區土壤乃至大面積紅壤中重金屬積累擴散，造成土壤重金屬污染退化加劇，生態系統遭受嚴重破壞。 -
This article points out that in china, the drought is aggravating gradually, agriculture proportion is decreasing slowly, arable area per capita, irrigation area and weight of diffusion area of new quality maize seed shows slow growth. it is difficult to improve maize technical efficiency
對技術效率的影響因素的研究結果表明，全國的旱災趨于加重，農業比重正在緩慢下降，人均耕地面積、灌溉和新品種應用的增長不快，而且從分佈上來看多對玉米主產區不利，未來玉米技術效率提高的形勢嚴峻。 -
Meso - scale atmospheric diffusion patterns and time scales over beijing area
北京地區大氣中尺度擴散模態和時間特徵分析 -
Spatial distribution and time scales of atmospheric diffusion over beijing area are revealed by means of a random walk simulation model and practical meteorological data with a specified emission source from the city. results show a southward transport pattern for wintertime while a northwest transport of pollutants in summer. the area is the least evidently influenced by the emission source in spring, while the largest in autumn. the time spent for instantly emitted material removing from the model domain varies from winter - spring to summer - autumn. the former was shorter one of less than 20 hours ; the latter was longer one of approximately 30 hours. distribution of occurrence probability for different removal times was not symmetry. reducing slowly at the end of longer removal time, probability exists for pollutants remaining in this area a long time
結果表明，冬季示蹤物偏南夏季偏西北的輸送明顯春季擴散影響范圍最小秋季最大。示蹤物從200km200km模式區域輸出的平均時間去除時間明顯分為冬春季和夏秋季兩組，前者較小，平均在20h以下，後者較大，平均約30h 。不同去除時間出現的頻率分佈是非對稱的，在長去除時間一側，出現頻率下降緩慢，顯示污染物有在該區域內長時間滯留的可能。 -
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。 -
The gas field in pemfc means the gas distribution in gas source, gas inlet tube ( scale of m ), gas - blower, gas manifold ( scale of cm ), channel ( scale of mm ), diffusion layer ( scale of um ), hydrophobic layer and catalyst layer ( scale of nm ). the aim of changing the scales is to make oxygen reach reaction area as evenly as possible
Pemfc的氣場指在氣源、進氣管（分米級） 、風機、進氣箱（厘米級） 、流道（毫米級） 、擴散層（微米級） 、疏水層（亞微米級） 、催化層（納米級）中的氣體分佈，每一級尺度的變化是為了氣體的進一步均勻化。 -
Based on an analysis of dynamic conditions for migration and precipitation of gold grains in water system and their diffusion in soil, this paper has advanced a discriminant formula for surfacce ore potential of gold anomalies from 1 : 50000 stream sediment survey, recounted methods for estimating the highest gold grade ores within the anomalies, calculated the discriminant indices for qinba area, and summed up index characteristics of ore - induced gold anomalies in 1 : 10000 soil survey, estimation formulae for orebody location as well as coefficients and constants of slope angles of various orders and grades
摘要在分析金粒在水系中運移、落淤和在土壤中擴散動力條件的基礎上，本文建立了五萬分之一水系沉積物測量金異常地表含礦性的判別公式，闡述了推算異常內礦石最高金品位的方法並計算了秦巴地區的判別指數；總結出萬分之一土壤測量礦致金異常的標志特徵、礦體定位的估算公式及各級次地形坡度角的系數和常數。 -
Numerical simulation results indicate that, for low temperature dust particles, dust particles mainly exist in the area near the column center and their charge - number can be considered as a constant, while in the area where there are no dust particles, ion and electrons are in ambipolar diffusion ; for high temperature dust particles, both the distribution regions of dust particle and high ion density are expanded and dust charge - number is increasing with the distance from the center
計算結果表明：當塵埃粒子的溫度較低時，塵埃粒子主要集中在圓柱形放電器的中心很小的區域，塵埃粒子攜帶的電荷幾乎是一個常數，受塵埃粒子空間電荷的影響，離子在該區域的密度最高。在遠離中心區域，離子和電子呈現雙及擴散特點；當塵埃粒子的溫度較高時，塵埃粒子分佈的區域和高離子密度區域擴大，塵埃粒子離放電器中心越遠，攜帶的負電荷越多。 -
Generally, the membrane thickness is much larger than the pore dimension. therefore, the resistance of the pore channel was the control resistance of the membrane diffusion process. while the existences of the stephen diffusion and pore interaction well explained the reason why the total membrane surface would be used as the interfacial area through where the mass transport took place
盡管由於膜的厚度比孔的尺寸要大很多， stephen擴散以及孔之間的相互作用對通過膜的總擴散阻力影響很小，但它們存在的結果是使整個膜表面的氣體濃度趨於一致。 -
City construction is identical with applying load on soil mass, so researching maximal area coverage and locus of stress diffusion, transfer and concentration in soil will be helpful of analyzing the deformation and stabilization of city foundation. it also is important content in the research of ultimate bearing resistance of city geologic environment, and it will provide beneficial reference for city disaster reduction, prevention and city sustainable development
城市建設等同於在城市下伏土體上不斷施加荷載，土中應力分佈、傳遞、集聚的最大區域、部位的研究，將有助於分析城市地基變形與穩定問題，是城市地質環境極限承載力研究中的重要內容，可為城市減災、防災，城市可持續發展提供有利的依據。 -
Adding on brain atlas, ct - mri image fusion, important functional active areas detected by functional magnetic resonance imaging and white matter fibers tracked from diffusion tensor imaging into an image guided neurosurgery system can help doctors a lot for locating, recognizing and protecting brain area during neurosurgery operations
通過在圖像引導神經外科系統中融合功能腦圖譜、 ct - mri圖像融合、功能磁共振圖像檢測到的重要腦功能區與擴散張量成像追蹤到的白質纖維束信息，可以在神經外科手術中幫助醫生精確定位、識別或保護重要腦區。 -
According to an abbreviated version of the report posted on the official website of the municipal government, experts concluded that the southern area of haicang district, the original location of the planned px plant, was too small and inadequate for the diffusion of atmospheric pollution
根據在廈門市政府官方網站公布的環評報告簡本，環評專家得出的結論是： 「海滄南部空間小，建設px項目的地理條件不適合污染氣體的擴散。 」 -
The oil film trajectory oscillates back and forth with the ebb and flood current, and its thickness decreases and area increases during the drift process with oscillation due to the diffusion
油膜軌跡隨落潮流和漲潮流來回振蕩，因擴散作用，在往復漂移過程中厚度變小，面積增大。 -
To investigate the space / time distributions and occurrence and evolution of such events, the diffusion pattern over deserts, turbulent transfer features in sandstorm weather, the particle size distribution, mass concentration and its distribution, optic properties, chemical composition and physical factors responsible for the initiation of raising sands, we made integrative observation and sounding of sandstorms deep in the large - scale desert area, including tengri, badanjilin and maowusu, with the items consisting of micrometeorological measurement, 3d wind observation, data from kb - 120 and anderson samplers of mass concentrations of sands with their spectrum, the distribution of aerodynamic particle sizes from the aps3310a, retrieval of aerosols " optic depth from sunphotometer data, assay of the chemical composition by means of neutron activiation analysis ( naa ) and integrated study of all related factors for causing sandstorm to occur, based on the observations of all kinds
利用所取資料，系統分析了不同強度沙塵天氣條件下沙塵氣溶膠質量濃度和質量濃度譜、粒子譜分佈、光學厚度、化學組分等特徵；綜合分析了影響沙塵起動的諸物理因子在沙塵起動中的作用；用沙塵輸送模式對一次沙塵暴天氣造成的泥雨過程的形成機制進行了模擬。歷史氣象資料統計分析表明，沙塵暴有其高發期（ 4 、 5月）和高發時段（ 14 - 20時） ， 14時到20時之間發生的沙塵暴約占沙塵暴總次數的66 。揚沙和沙塵暴天氣條件下，湍流動量通量和湍流感熱通量都是重要的湍流交換，沙塵暴發生前近地層的超絕熱不穩定對沙塵暴天氣有加強作用。 -
Diffusion patterns ; time scales ; random walk simulation ; beijing area ; historical state
擴散模態時間尺度隨機遊走北京地區歷史背景 -
The distribution pattern can be attributed to ( 1 ) pollution sources located mostly in the eastern coast area ; ( 2 ) the current circulation systems in jiaozhou bay which hindered diffusion of pahs from east towards west ; ( 3 ) sediment grain size and composition factors had an influence on the horizontal distribution
造成這種東-西差異分佈格局的原因有（ 1 ）絕大部分污染源集中在膠州灣東岸； （ 2 ）膠州灣的環流系統和潮流系統使東部的污染物很難向西部擴散； （ 3 ）沉積物粒度及有機質含量對pahs含量分佈有一定的影響。 -
Mrs yau said, " in our digital 21 strategy promulgated last may, we have adopted strengthening the hong kong community for digital exploitation as a key result area, and have set out policies and measures to achieve our goal. " us $ 280 million has so far been spent on various initiatives to address digital divide in four specific fronts, namely, education and training ; technology diffusion in the community ; knowledge and awareness ; and access to online services
尤曾家麗說：我們于去年五月公布的數碼21資訊科技策略中，把加強香港社群掌握數碼科技的能力列為主要工作范疇之一，並已制訂各項政策和措施，以達到我們的目標。政府至今已動用2 . 8億美元推行在四方面，包括教育及培訓、社會上科技普及、知識和認知、以及網上服務的各項措施，以消除數碼隔膜。 -
Progress of the research in the area of numerical simulation of transient liquid phase diffusion bonding
瞬間液相擴散連接過程數值模擬的研究進展 -
According the mature area of hydrocarbon sourcerock, this paper determined the gas diffusion area
根據烴源巖成熟面積確定天然氣擴散面積。
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