The concept put forward is that the tensile limit rate is more important than tensile strength for the safety of geomembrane used in earth and rock dams.
根据土石坝防渗土工膜受力变形的理论分析成果,结合组合式土工膜在不同粘着牢度及人工加速老化等不同情况下的拉伸试验结果,深入探讨了组合式土工膜的一些工程特性,提出极限伸长率对于膜本身的安全比拉伸强度更为重要的概念以及组合膜获取最大极限伸长率的方法,并得出了一些具有工程实用价值的结论。
A Discussion on Blow Performance Limit of Clutch Screw Presses;
离合器式螺旋压力机极限打击性能的讨论
The Frmula Judging Method of Edge-turning Limit of Interior Holes;
内孔翻边极限的公式判定法
The Limit of Human Performance in the Pole Vault;
人类撑杆跳高成绩的极限研究
Environmental problems are caused by human's act ivities and their influences , which go beyond the limit of environment.
环境问题是人类活动及其影响超出环境承受能力的极限所造成的后果。
A detailed discussion on the limit of function of functions is taken and six theorems are given in this paper.
本文对复合函数的极限做了细致的讨论 ,给出了 6个定
How to get the limit of the dual function is a difficult point in advanced maths.
二元函数求极限是高数中的难点,现归纳了6种求二元函数极限的方法,分别为:直接证明、先估值后证明、利用二元函数的连续性、用无穷小量与有界变量的乘积仍为无穷小量的结论、用重要极限limx>0sinx=1、用两边夹定理。
The comparison of new national standard “limits and fits” and “surface roughness” with the old one;
新国家标准《极限与配合》、《表面粗糙度》等与其旧标准的对比
The Generalized Differential Theorems of Mean and Their Applications in Getting Limits;
广义微分中值定理及其在求未定式极限中的应用
The Historical Evolution and Analysis About the Concept of Limitation;
极限概念的历史演变及分析
In calculus,ξ-N method and ξ-δmethod are used to interpret limitation conception,which is a teaching difficult point.
针对微积分课程中用方法和方法讲述极限概念这一教学难点,提出了讲授中应着重理解严格极限概念产生的历史背景及其对微积分发展的巨大影响,揭示了其丰富内涵,并且采取适当教学方法,既突破了难点,又启发了学生对直觉思维和逻辑思维的思考,培养了逻辑推理能力。