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concrete-form
相关语句
  混凝土模板
     Study on concrete-form board made from hardboards
     硬质纤维板压制混凝土模板的研究
短句来源
     A study on top grade bamboo-wood composite concrete-form
     高档竹木复合混凝土模板研究
短句来源
     Paper impregnated resin overlaying of radical bamboo-wood composite concrete-form was top grade concrete-form which had good physical and mechanical properties, high utilization rate of bamboo, smaller deviation color and thickness.
     浸渍纸贴面径向竹木复合模板的物理力学性能好、竹材利用率高,板面色差和厚度偏差小,是一种高档的混凝土模板.
短句来源
     The combined effect of drying time after resin soaking,soaking time, ratio of resin to water, and hot,pressing pressure, time andtemperature on the properties of the concrete-form board was also studiedwith the orthogonal experiment.
     用正交试验法研究浸胶时间、浸胶后干燥时间、树脂与水的比率、热压压力、时间和温度对硬质纤维板混凝土模板性能的综合影响;
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     Technology of Composite Bamboo Particle Boards Used as Concrete-form Boards
     混凝土模板用复合竹碎料板工艺研究
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  “concrete-form”译为未确定词的双语例句
     Review and Prospect for Bamboo Building Concrete-form Industry in Jiangxi Province
     江西省竹材建筑模板业的回顾与展望
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     Study on the Technology of Poplar Plywood for Concrete-form
     杨木胶合板模板工艺研究
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     Preliminary Research on Quality Problems of Plywood for Concrete-form in China
     我国胶合板模板质量问题初探
短句来源
     Study on paper impregnated resin overlaying of radical bamboo-wood composite concrete-form
     浸渍纸贴面径向竹木复合模板的研究
短句来源
     properties . raw materials . standard and quality control measures of the plywood for concrete-form in China are pointed out and countermeasures for improving quality level of the plywood are set forth.
     根据我国胶合板模板业现状,对照国外先进水平,指出我国胶合板模板在产品品种、性能、原料、标准及质量管理手段等方面存在的问题,阐述了提高胶合板模板质量水平的对策建议。
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  相似匹配句对
     concrete;
     混凝土;
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     On form
     “形式”论
短句来源
     J-1 Form Release Agent for Concrete
     J-1型混凝土脱模剂
短句来源
     Thaumasite form of sulfate attack on concrete
     混凝土中Thaumasite硫酸盐侵蚀的形成与特征
短句来源
     And a sentence example is its concrete form.
     句例和句样是具体和抽象的关系;
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Published here are two sections of the last chapter of the newly prepared text Structural Mechanics. The conditio us forsimplification of local parts of a structure and of the structure as a whole are analyzed herein and a preliminary summary on the interrelation between actual structures and their mechanical models is given. Rational simplification of actual structures is a problem usually neglected in old textbooks. Authors of this text observed Chairman Mao's teaching: The nature of a thing is determined...

Published here are two sections of the last chapter of the newly prepared text Structural Mechanics. The conditio us forsimplification of local parts of a structure and of the structure as a whole are analyzed herein and a preliminary summary on the interrelation between actual structures and their mechanical models is given. Rational simplification of actual structures is a problem usually neglected in old textbooks. Authors of this text observed Chairman Mao's teaching: The nature of a thing is determined mainly by the principal aspect of a contradiction, the aspect which has gained the dominent position, analyzed the multifarious forms of connection between various parts of a structure and made an attempt to introduce the concept relative stiffness, which synthesizes various concrete forms of connection and makes possible a quantitative evaluation of the condition for simplification. The writing of new textbook is an important aspect of educational revolution. The selected sections of text materials published in the present issue and the preceding one of this journal are presented as materials for reference and discussion. They contain some new ideas in certain respects but are yet not perfect. From now on, we shall continually publish materials of such nature. We hope sincerely that all comrades engaged in textbook writing and all readers recommend to us such sections of new textbook material and take part in the study and discussion of them, thus promote educational revolution.

这里选载了新编“结构力学”教材最后一章中的两节。文中既分 析了对结构局部进行简化的条件,也分析了对结构整体进行简化的条件,对力 学模型和实际结构的内在联系作了初步总结。 如何对实际结构进行合理的简化,在旧教材中在往是迴避的。该书编者遵 照毛主席关于“事物的性质,主要地是由取得支配地位的矛盾的主要方面所规 定的”教导,分析了结构各部分之间多种多样的联系,试用了“相对刚度”这 个概念,来概括各种联系的具体情况,据此可以对简化条件进行数量的分析。 编写新教材,是教育革命的一个重要方面。本刊上期和本期刊登的有关教 材选段,是作为一种资料,供大家讨论参考;它们在某些方面有一定的新看 法,但还不完善。希望从事教材编写工作的同志和读者,积极向本刊推荐这类 新教材的章节和参加研究讨论,从教材这个侧面促进教育革命。

The matrices of class M have been investigated in detail by Householder.In this paper,we shall discuss the matrices of class M by using the L-norm,instead of the concept of the convex body.A comparatively short and new proof on the suf- ficient condition for a matrix to be of class M is given.When A is a matrix of class M,we find a concrete form of the matrix L such that‖A‖_L=p(A). Having Discussed the stability problems with the matrices of class M,we give a general sufficient condition on stability.First,the...

The matrices of class M have been investigated in detail by Householder.In this paper,we shall discuss the matrices of class M by using the L-norm,instead of the concept of the convex body.A comparatively short and new proof on the suf- ficient condition for a matrix to be of class M is given.When A is a matrix of class M,we find a concrete form of the matrix L such that‖A‖_L=p(A). Having Discussed the stability problems with the matrices of class M,we give a general sufficient condition on stability.First,the statement(H)by Kreiss is equivalent to the following:(L)There is a constant C>0 and,for each A ∈,a nonsingular matrix L such that ‖L‖_2·‖L~(-1)‖_2≤C,‖A‖_L≤1.Secondly,let the non- singular matrix V transform A into a Jordan canonical matrix.If‖V‖_2·‖V~(-1)‖_2≤ c~2,where c=const>0,then Von-Neumann condition is also sufficient for stability when A is the matrix of class M.However,if there is a constant r<1,and ρ(A)≤ r<1,then the difference scheme is stable when A is not a matrix of class M.

Householder 在[1]中详细讨论过 M 类矩阵.本文不用几何上的凸体概念,而用 Young所引入的 L 模来讨论 M 类矩阵,给出一个 M 类矩阵充分条件的较为简单的新证明.同时,若A 是 M 类矩阵,给出了一类具体的非奇异矩阵 L,使得‖A‖L=■(A).但我们未能找到使得‖A‖L=■(A)的通解 L.然后用 M 类矩阵来讨论差分格式稳定性问题,给出了一个比较一般的实用的稳定性充分条件.

This paper gives, in very simple terms, two new proofs of Villat's formula of analytic functions in an annulus,by the properties of Schwarz integral and Poisson integral and the following representations of kernel functions:for q<|z|<1.Then the formula is generalized into n-Connected Circular domains. The final result took its concrete form and were read in 1964, earlierthan Dunducenho's which was announced in MR 34# 6047, 1967.

本文利用Schwarz积分和Poisson积分的性质及核函数的下列表示式: K_1(z,ξ_1)=(ξ_1+z)/(ξ_1-z)+sum from k=1 to ∞ ((ξ_1+q~(2k)z)/(ξ_1-q~(2k)z)+(ξ_1+q(-2k)z/(ξ_1-q~(-2k)z)),ξ_1=e~(iθ) K_2(z,ξ_2)=(ξ_2+z)/(ξ_2-z)-sum from k=1 to ∞ ((ξ_2+q~(2k)z)/(ξ_2-q~(2k)z)+(ξ_2+q(-2k)z/(ξ_2-q~(-2k)z)),ξ_2=qe~(iθ) 给出圆环内解析函数的Villat公式的两个十分简单的证明。并进而把它推广到任意有限连通的圆界区域中去。后一结果此“美国数学评论”34卷#6047(1967)介绍的Dunducenko的结果要早,我们的工作完成于1964年。

 
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