negative diffusion 中文意思是什麼
negative diffusion
解釋
負擴散-
If the velocity of atoms is near to zero, the light for ces will tend to confine the atoms near to nodes and antinodes. the stability depends on the magnitude of the negative slope of the light force, the depth of the potential well and the momentum diffusion coefficient. it is important to select the parameters, e. g
如果通過激光冷卻能使原子速度降至很小甚至為零，光壓力的作用將使原子被較穩定地囚禁于激光駐波場的節點和反節點處，其穩定程度取決于該處光壓力曲線負斜率的大小、對應勢能的勢阱深度以及動量擴散系數的大小，因此，如何在實驗中合理選擇激光強度、失諧量等顯得尤為關鍵。 -
In acid copper sulphate solution, the nc copper has a more negative corrosion potential which is decreasing with reducing the grain size and diffusion impedance was only found in the as - prepared and as - annealed at 180 ? nc copper due to the diffusion within the pores and channels on the surface. both the tafel plots and eis study demonstrated that the nc copper exhibits a higher corrosion current and lower polarization resistance than its mc couterpart
在酸性硫酸銅溶液中，納米晶銅的腐蝕電位比微米晶銅要負，並且隨著晶粒尺寸的減小而降低。 eis研究表明，未退火的和180退火的納米樣品中發現了擴散阻抗，與表面孔洞和通道中的擴散有關。極化曲線外推法和電化學阻抗研究都表明納米晶銅的腐蝕電流比微米晶銅高，而極化電阻要低。 -
All the experiment analyses are presented in chapter 3, including the lodging of negative resistance effect based on the measurement of the parameters of ga - diffusion trans
結構中近硅表面微區域濃度的變化規律， ga擴散過程的三個階段包括預沉積、再分佈和二次氧化，對應于ga在a -
Based on the energy band characteristics of ordinary negative electron affinity emitter gaas, the design of lengthening the diffusion lengths of negative electron affinity emitter gaas was presented, and the special negative electron affinity emitter gaas was designed
摘要根據通常負電子親和勢二次電子發射材料砷化鎵的能級特點，提出延長負電子親和勢二次電子發射材料砷化鎵的逸出深度的理論設計，設計出了特殊的負電子親和勢二次電子發射材料砷化鎵。 -
Current research of the technique of ga diffusion and the negative resistance effect of open - tube ga - diffusion transistor are emphasized
重點介紹了目前開管ga擴散工藝的發展現狀和開管擴鐮晶體管負阻效應的研究現狀。 -
Yet the outstanding shortcoming of open - tube ga diffusion is the apparent negative resistance effect in the ic - vce characteristic curve, which is not what we hope
盡管如此開管擴鎵的突出缺點是在特性曲線中的負阻效應較為明顯，負阻現象的存在是我們不希望的。 -
A propbr data structure is used to assist grid generation for different geometric dimensions. a concept of entropy in broad sense is proposed for convective - diffusive problems in chapter 7. it is proved that there is an intrinsic relationship between the stability of the numerical schemes of the convective - - diffusive differential equations and the non - negative property of the entropy generation caused by the effective diffusion
第七章提出了對流擴散問題中的廣義熵概念，研究了擴散熵產非負性特徵與數值格式穩定性的內在聯系，分析證明了擴散熵產非負定性及統計非負定性的穩定性準則，探討了穩定性與模擬性之間的矛盾與聯系。 -
Ruin probability for the negative risk sum model perturbed by diffusion
帶干擾負風險和模型的破產概率 -
Thus, non - negative property is suggested as the criterion of stability. furthef, diffusion coefficient is replaced by an artificial one in the finite difference equation to simulate the entropy generation can improve the accuracy of the numerical analysis
在盡可能滿足對流擴散過程數值格式中的輸運性或守恆性及穩定性的同時，以擴散熵產模擬為原則的偽擴散系數可有效地提高數值模擬的模擬性，為數值計算中擴散系數的修正提供了一種有效的手段。 -
The paper considers a risk model with negative risk sum perturbed by diffusion. the integro - differential equation and the explicit expression for the ruin probability are derived
摘要引進帶干擾負風險和模型。給出該模型的破產概率所滿足的積分微分方程及解析式。
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