近似程度

We then say that whatever kind of picture these make, I can always approximate as closely as I wish to the description of it by covering the surface with a sufficiently fine square mesh, and then saying of every square whether it is black or white.

于是我们可以说，不管这些斑块构成一种什么图像，只要用一张足够精细的方格网覆盖住这个表面，然后说出每一个方格是黑的还是白的，我就总是能够使对这个表面的描述达到任意程度的近似。

At last, we gave an upper bound of the difference of the combination and the boundary.

并求出近似解和精确解的接近程度。

The sub-filters of Interacting Multiple-Model algorithm are based on Kalman filtering, which requires the accurate statistical characteristics of noise. Unfortunately, it is usually unknown and only the approximative models can be obtained, which may result in decrease of IMM performance.

交互多模型算法的子滤波器都是基于Kalman滤波的，它要求知道精确的噪声统计特性，然而在许多情况下噪声信号的统计特性是未知的，只能得到噪声信号的近似模型，这在一定程度上降低了IMM算法的跟踪精度。

In a way, the total vibration of revolvingmachines in the ship may be approximatively regarded as the total ship noise. So thesystem mostly on-line monitors the vibration state of revolving machines in the ship.

由于船舶内旋转机械的总振动在某种程度上可以近似地被当作船舶总噪声，因此系统主要是针对船舶内旋转机械的振动状况进行在线监测。

Great comic artists assume that truth may bear all lights, and thus they seek to accentuate contradictions in social action, not gloss over or transcend them by appeals to extrasocial symbols of divine ends, cosmic purpose, or laws of nature.

这样，对于数学家们来说是非常惊诧的，例如，薛定谔方程式并不是氢原子的准确描述，而只是某种程度上的近似值。它近似于另外一种描述磁性偶极子相对效果的方程，而这个方程本身又是一套不定量子场论方程的近似值。

The results of the present research are as follows, The correlation between physico-chemical properties of organic compounds and their competitive power was studied, and it was indicated that organic compounds preferable to form H-bonding with organic matter of sorbents have stronger competitive power; Sorption behaviors of ionizable organic compounds in different species and their competitive power were examined, and the results showed that phenols and carbonxylic acids with benzyl circle have much stronger competitive power in molecular species than in ionized species, because negative charges of anionic forms can depressed their adsorption on the surface of the sediment; in contrast, organic bases such as aniline and p-chloroaniline show weaker competitive power in molecular species than in ionized species, and this is because both species of the organic bases could adsorb strongly onto the sediment; there is a correlation between competitive power of organic pollutants in multi-solute systems and their sorption isotherm nonlinearity in single-solute systems, and organic compounds whose sorption isotherms is linear in single-solute systems hardly have competitive power in multi-solute systems; Competitive sorption effects in more than two-solutes systems was studied, and it was exhibited that mixture of two cosolutes each of which could suppress sorption of nominal solute onto the sediment had synergistically competitive sorption effect on the nominal solute; A method about incorporating sorption/desorption of organic pollutants into river water quality model was developed, and discussion about degree of sorption/desorption effect on model prediction for different organic compounds was made, which will provide theoretical basis and practical processes for setting up more accurate water quality model.

论文主要取得了以下研究成果。(1)有机化合物的吸附竞争能力与其物化性质具有相关性，易与沉积物有机质形成氢键的化合物其竞争能力也比较强；(2)可离子化有机化合物的吸附竞争能力与其存在形态有关。酚类、含苯环的羧酸类化合物，其离子态的吸附竞争能力远小于分子态，其机理为有机酸阴离子所带的负电荷抑制了表面吸附能力，主要发生分配作用；而苯胺类化合物，其离子态和分子态都表现出显著的竞争能力，而且离子态的竞争能力略强于分子态，原因在于有机碱阳离子所带的正电荷促进了其表面吸附能力；有机化合物竞争能力的强弱与其单组分吸附等温线的非线性程度具有一定的相关性，吸附等温线近似为线性的化合物没有或只具有微弱的竞争能力；(3)对目标有机化合物的吸附具有竞争效应的有机化合物混合后，将对目标有机化合物的吸附产生协同竞争效应；(4)以京杭运河为例，率先提出了将有机污染物的吸附／脱附作用及水文水力参数耦合到水质模型中的方法，并讨论了吸附／脱附作用对不同有机污染物预测模型的影响，为建立更准确的水质模型及进行更客观的风险和生态评估提供了参考依据。

Results ⑴ The cell proliferation was inhibited by TET. It showed thatdivision index and cell number during G0-G1 were decreased, while S and G2-M phases were lengthened with dosage and time dependency in dosages of TET from 2mg/L to 8mg/L; besides, oval-shap cells, karyopyknosis and fragmentation were observed under light microscope. The inhibitory effect in T2 group was statistically similar to that in triamcinolone.

结果⑴ TET在2mg/L~8mg/L之间呈剂量及时间依赖性地抑制瘢痕成纤维细胞的增殖，使生长曲线不同程度的压低、分裂指数降低、G0-G1期细胞数减少、G2-M期增多、S期与G2-M期延长，光镜下见细胞突起变短，细胞由梭形变成椭圆形，核固缩、碎裂。P.C的改变近似于T2组(4mg/L TET)。

But simulation results demonstrate that the accuracy degree of our approximate analysis is acceptable. Both analsis and simulation in this chapter show that the destination correlation between successive packets have strong adverse effect on the performance of nonblocking packet switches.

仿真结果显示这种近似分析的准确程度是可以接受的本章的分析和仿真都表明相邻到达信元的目标地址的相关性对无阻塞交换机的性能产生较大的负面影响。

In China letters are respected not merely to a degree but in a sense which must seem, I think, to you unintelligible and overstrained.

在中国，文学之受到尊重，不仅达到一定程度，而且在某种意义上，我想，你们一定认为难以理解，甚至近似沉重。

The linear dispersion relation of the enhanced equations is the Pad\'{e} [4,4] expansion of the linear Stokes dispersion relation, the accuracy of which is acceptable even when the relative water depth is as large as 1.0. Its nonlinear property and shoaling gradient are also improved.

改进后方程的线性色散关系达到了一阶Stokes波色散关系的Pad\'{e}[4，4]近似，在相对水深达1.0的强色散波浪时仍保持较高的准确性，并且方程的非线性和线性变浅率都得到了不同程度的改善。

He knows that he's one of the mostdominant players in the NBA right now.

我知道他现在是联盟里最有统治力的球员之一了。

Using analysis method of BCG , the dissertation analyzed the management of voluntary service organizations .

利用BCG分析方法对我国的志愿服务组织管理进行了分析。