查询词典 diffusion

Calculation of diffusion index, a leading, synchronization, lagging indicator composite index.

计算扩散指数、领先、同步、滞后指标综合指数。

The driven potential controls the particle transfer velocity in the process governed by the diffusion equation , and as a consequence determines the compound nuclear formation probability of DNS .

它制约由输运方程所支配的核子转移速率，因而确定了双核系统形成复合核的几率。

By analyzing experimental data, it was found that wear patterns of nano-TiAIN coated cemented carbide tools in high speed milling AerMet100 steel included rake face wear, flank wear, breakage of coating, micro-chipping of cutting edge, boundary groove wear, conchoidal avalanche. Wear mechanisms included abrasion, adhesion, diffusion and chemical wear.

研究表明纳米TiAIN结构涂层硬质合金刀具在高速面铣削AerMet100钢时磨损破损形式主要为前刀面磨损、后刀面磨损、涂层材料的破损、微崩刃、边界沟槽磨损，贝壳状崩落；磨损机理主要是磨粒磨损、粘结磨损、氧化磨损和扩散磨损。

BFGF can\'promote wound restoration and mucosa concrescence, whereas it has direct association with carcinogenesis and diffusion of tumor.

但bFGF在促进创伤修复、粘膜愈合的同时又与组织的癌变及肿瘤的扩散有直接关系。

The constant of proportionality between the diffusion flux and the concentration gradient in Fick's first law.

Fick第一定律中，扩散通量和浓度梯度之间的比例系数。其量级表示了原子扩散的速度。

Diffusion coefficient,reaction velocity constant and the change of EIS of the electrode system were also studied.

依据反应前后循环伏安曲线的变化特征判断了In与DNA相互作用的方式。

Based on the basic diffusion theory, the general model of the contaminant transport in the environment is presented.

然后从最基本的扩散理论入手，建立了污染物质在环境介质中传输的通用模型，再结合土壤这一特定的环境介质，对传输模型进一步深化，得出能准确地表达出污染物在各种土壤条件下的运移过程的数学方程，并给出了各种典型情况下的解析解。

In the underground repositories,the microstructure change of surrounding rock under the action of the chemical corrosion will cause the increase of porosity in medium and the accelerative diffusion of chemical contaminator.

利用SEM电镜扫描技术和X衍射晶体鉴定技术，对经0.01 mol/L，pH值为12的NaOH溶液作用前后的φ50 mm×100 mm大小砂岩试件的表面和矿物成分进行分析，探讨砂岩试件腐蚀表面的微区形貌和矿物组成的变化特征。

In this thesis, a semi-classical model of the force on an atom is used to describe the motion of a two-level atom interacting with a standing wave laser field. The velocity dependent force and momentum diffusion are derived through optical Bloch equations by using the matrix form of the continued fraction technique. By investigating the dynamic properties of atoms in laser field, we can control and manipulate the mechanical motion of an atom.

本文利用半经典理论，从二能级原子在激光驻波场中所满足的运动方程出发，推导出密度矩阵元所满足的递推关系，利用矩阵连分数方法求解出密度矩阵元，从而求出依赖于原子运动速度的光压力与动量扩散系数，通过讨论原子在激光场中的动力学行为，为原子在激光场中被囚禁、形成原子列阵以及可控制的量子态，从而为量子信息处理提供理论基础。

Institute of Statistics and Actuary, Shandong Economic UniversityAbstract We consider the risk process perturbed by diffusion under interest force in this article. The integral expressions, continuities, twice continuous differentiability and integro-differential equations about $F_{\delta}$, the distribution of the surplus immediately before ruin, and $H_{\delta}$, the joint distribution of the surplus immediately before ruin and the deficit at ruin are obtained.

我们考虑既带有随机干扰又带有确定投资回报的风险过程，得到了破产前瞬间盈余的分布$F_{\delta}$及破产前瞬间盈余和破产时赤字的联合分布$H_{\delta}$所满足的积分表达，连续性及二次连续可微性和积分--微分方程。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。