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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Like the truncations of the Taylor expansion, the truncations of a chromatic expansion at t = t0 of an analytic function f(t) approximate f(t) locally, in a neighborhood of t0.
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It is available for the case that the sign of f(x) changes frequently or the derivative f'(x) does not exist in the neighborhood of the root, while the Newton method is hard to work.
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One allows the appearance of eight limit cycles in the neighborhood of infinity, which is the first example that a polynomial differential system bifurcates eight limit cycles at infinity.
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Neighborhood union of independent sets and hamiltonicity of claw-free graphs
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Let G be a graph, for any u∈V(G), let N(u) denote the neighborhood of u and d(u)=|N(u)| be the degree of u.
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| | Schmertmann's method for estimating the settlement of sandy soil stratum is considerable simple and more reliable. The essential problem is how to evaluate the modulus of elasticity to be used in calculation. There are three sources from which we can get various information concerning this parameter, i. e. ( 1 )from subjective judgment of the qualified engineer or judgment based on the data and experience with the soil in the neighborhood, (2) from appropriate empirical equations derived from the regr... | | 文中首先介绍施默特曼(Schmertmann)的砂性土地基沉降简化计算法以及弹性模量与静力触探试验中的贯入阻力或标准贯入试验中的锤击数之间的各种回归方程。主要有三种渠道可以取得有关弹性模量的资料,作者用贝斯(Bayes)定理把这些资料进行综合更新,提炼更加可靠的计算指标。然后根据要求的可靠度确定出现沉降真值的置信区间。最后通过一个算例说明具体计算步骤。 | | 文摘来源 | | In this paper, we have discussed the elasto-plastic problems of the circular tunnel under unequal compression in two directions. It is assumed that the materials may be idealized as elasto-perfectly plastic and the media in the neighborhood of the hole have been already in the plastic state.Using the Coulomb Yielding Criterion and considering the second order infinitesimal, the stress distribution and elasto-plastic interface are given. Unlike the results given by previous approximate methods, the res... | | 本文研究两向不等压作用下圆形巷道围岩的弹塑性问题。假设材料是理想弹塑性的,在圆孔周围有一环状区域已进入塑性状态,在库仑屈服条件下,用摄动法给出弹塑性区域考虑二阶小量的应力分布及弹塑性交界线的解析表达式。与以往近似法的结果不同,本文的研究结果表明,巷道围岩的弹塑性交界线形状类似于椭圆,随着内摩擦角的增加更接近于圆形。 | | 文摘来源 | | From a point of view of community theory, the problem existed in therapid changes in living environment of our country is anelyzed and points out that com-munity consciousnes is a vital factor affecting living quality of an environment, probesinto the concept of community consciorsness and its affecting factor, and expands thecommunity cousciorsness from a spontaneously formed stage to a consciously seekingstage in the development of the living environment. Comparing community conscious-ness among a few dif... | | 运用社区理论的观点,分析研究了目前我国居住环境在急剧变化中出的问题,提出社区意识是影响居住环境生活质量的重要因素。阐述了在居住环境历史发展过程中人们从自发形成社区意识到自觉追求社区意识的过程,并比较了中国城市中几种不同类型住宅区的社区意识,得出老邻里社区意识比较浓厚的结论。进一步分析指出:在高密度老邻里环境中,社区意识有其自身的特点,而且通过生活方式与居住环境中的空间形态和社会组织一定程度的和谐,产生社区意识与居住环境的正态运转。 | | 文摘来源 | |   | | << 更多相关文摘 |
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