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The diffusion structure has important impact on the rate of the diffusion and safety intensity for block cipher.Using the linear transform which has branch numbers as large as possible as the diffusion structure is a main method to devise block cipher.The linear transform is usually achieved by constructing the invertible matrix.

扩散结构的好坏直接影响了分组密码的扩散速度和安全强度,以分支数尽可能大的线性变换为分组密码算法的扩散结构是设计分组密码的一种重要方法,线性变换的构造可通过可逆矩阵的构造完成。

The so called K theory of atmospheric diffusion is used for discussing the vertical distribution of CO in street(includes the viaduct-crossed streets), and the results indicate the vertical concentration distribution of CO in both types of the street can be predicted as exponential functions of dimensionless height.

由于绿化型式对城市大气环境和景观效应均有重要影响,但多数已有的街道内部污染物扩散模式均未考虑行道树树冠对交通污染物扩散的影响,本文以CO为环境示踪物,通过对西安市典型街道的实测和数据分析,讨论了绿化型式对街道污染物扩散效果的影响,并据此对街道绿化的生态设计给出了建议。

Abstract] objective to compare the advantages and disadvantages of different samples and different methods in detection for banded krait venom.methods double immunodiffusion and enzymelinked immunosorbent assay were used as the methods to detect different samples of people and animal who were bit by banded krait.results in double immunodiffusion the samples were all negative;with elisa the samples of wound tissue liquid and blood were all positive.conclusion wound tissue liquid and blood are both fitting samples in detection for banded krait venom;double immunodiffusion isn't adapt to detect banded krait biting patient,but elisa is an good detection method.

目的 探讨银环蛇毒中毒检测中不同材料与不同方法的优缺点。方法采用双向免疫扩散法与间接elisa法对银环蛇毒中毒的人与动物的不同标本进行检测。结果双向免疫扩散法死者伤口皮肤组织液、死者心脏血清、死小猪伤口皮肤组织液及死小猪血清标本均未见免疫沉淀带;elisa法测标本均为阳性。结论银环蛇毒中毒检测中伤口皮肤组织液和血液都是合适的材料;双向免疫扩散法的检出率较低,而elisa法则是一种较好的检测方法。

The current equations are derived and the effect of the magnetic field on the current is discussed.

同时讨论了部分游离的等离子体中的电流、扩散和热扩散对电流的影响以及磁场对扩散的影响。

Diffusive fluxes are roughly symmetric around the magnetic equator during equanoxes. But they are asymmetric during solstices, the winter hemisphere has smaller fluxes than the summer hemisphere does.

在分点,南北半球的扩散通量和扩散速度大致对称;而在至点,扩散通量存在着明显的南北半球不对称现象。

According to the point "some assumptions about steady state diffusion are valid when non steady state diffusion is studied"and carbon conservation law,the carbon contents' leaping condition is given.

按照"在研究非稳态扩散问题时,稳态扩散研究中的有些假定仍然是有效的"的观点,利用碳的守恒定律给出碳浓度的跳跃条件,结合扩散通量条件,推导结果发现这种内边界条件无法解决F/A界面上的迁移。

The general model, including axial dispersion flow for the bulk fluid phase, diffusion equation described by Fick law for the particle phase and the equilibrium concentration given by a modified competitive Langmuir isotherm, was presented and discretized with Galerkin and orthogonal collocation into a series of ordinary differential equations.

为考察孔内扩散对模拟移动床分离过程的作用,采用综合速率模型对其进行研究,其中流动相模型为轴向扩散活塞流,颗粒相为Fick定律描述的扩散方程,液相和固相之间的吸附平衡采用改进的Langmuir吸附等温线。

The penetrative rate of diclofenac acid was greater than that of diclofenac sodium in calcium alginate gel.

经皮扩散时,分子形式的双氯芬酸钠在海藻酸凝胶中的扩散速率大于离子形式的扩散速率;在卡波普凝胶中结果则相反。

Seed dispersal is one of the processes of landscape ecology. Acknowledge of seed dispersal process and mechanism not only revealing future construction composition and dynamic about species population and community, applying parameter for landscape model, but also providing theoretical foundation for vegetation resume and environment protection.

种子扩散研究是有关景观过程的研究,了解种子扩散的过程以及扩散机制,不仅能够了解物种、种群以及群落未来的结构、组成与动态、为景观模型提供参数,而且为植被的恢复、自然环境的保护提供理论依据。

And the article discussed the pare diffusion and pure infiltration of ions and complex ions with linear isotherms, combined with diffusion and infiltration, as well as pure diffusion with non-l...

并讨论了铜厂铜矿床形成过程中离子、络离子具线性等温线的纯扩散、纯渗滤和扩散与渗滤重叠情况,以及非线性等温线的纯扩散作用。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。