7-1应力状态概述 (Concepts of stress-state) 7-2平面应力状态分析-解析法 (Analysis of plane stress-state) 7-3平面应力状态分析-图解法 (Analysis of plane stress-state) 7-4三向应力状态分析 7-5平面应变状态分析 (Analysis of plane strain-state) 7-6广义胡克定律 (Generalized Hook's law) 7-7复杂应力状态的变形比能 (Strain-energy density in general stress-state 7-8强度理论(Failure criteria) 7-9莫尔强度理论 (Mohr's failure criterion)

§9-1 压杆稳定的概念 (The basic concepts of columns) §9-3 其它支座条件下细长压杆的临界压力 (Euler’s Formula for other end conditions ) §9-2 两端铰支细长压杆的临界压力 (The Critical Load for a straight, uniform, axially loaded, pin-ended columns) §9-4 欧拉公式的应用范围•经验公式 (Applicable range for Euler’s formula • the experimental formula ) §9-5 压杆的稳定校核 (Check the stability of columns) §9-6 提高压杆稳定性的措施 (The measures to enhance the columns stability)

1、SN1和S2反应的机理、影响因素和立体化学 2、S1与SN2反应的竞争问题 3、SN1和SN2反应在合成上的应用

【0-1】从基本单位换算入手，将下列物理量的单位换算为 SI 制。 （1）40℃时水的粘度 μ=0.00656g(cm·s) （2）某物质的比热容 CP=0.21BTU/(lb·F) （3）密度 ρ＝1386kgf·s2/m4 （4）传热系数 KG=24.2kmol/(m2·h·atm) （5）表面张力 σ＝71dyn/cm

The true language of computers is a stream of 1s and 0s—bits. Everything in the computer, be it numbers or text or program, spreadsheet or database or 3-D rendering, is nothing but an array of bits. The meaning of the bits is in the “eye of the beholder”; it is determined entirely by context. Bits are not a useful medium for human consumption. Instead, we insist that what we read be formatted spatially and presented

3.3.1简介 3.3.2客户机/服务器结构 3.3.3C/S结构的数据库管理系统 3.3.4C/S结构的数据库系统 3.3.5浏览器/服务器模式 3.3.6分布式数据库体系结构

Economic growth‖ Is there some action a government of India could take that would lead the Indian economy to grow like Indonesia's or Egypt's? If so, what, exactly? If not, what is it about the \nature of India that makes it so? The conse- quences for human welfare involved in questions like these are simply stag- gering: Once one starts to think about them, it is hard to think about Robert E. Lucas, Jr

In this lecture we will look at some applications of Newton's second law, expressed in the different coordinate systems that were introduced in lectures D3-D5. Recall that Newton's second law F=ma, (1) is a vector equation which is valid for inertial observers. In general, we will be interested in determining the motion of a particle given

利用正交实验设计配制由透明质酸HA、Lα-DPPC磷脂和y-球蛋白3种成分构成的复合人工滑液,在PVA-H/PVA-H,PVA-H/316L S S两类人工关节摩擦副上,利用自制振子式摩擦仪测定其摩擦学参数,初步确定出复合人工滑液中3种成分的适宜配比

3-1气象因素对家畜的影响 一温度 (一)家畜的体热调节与平衡 1体热调解 2热平衡方程:M=±R±C±±±W±S M=代谢热T=辐射热C=对流热K=传导热E=蒸发热 W=做功热S=循环热 方式 (1)辐射(2)传导(3)对流(4)蒸发E=k*V(ss-pa)*As (5)通过采食饮水排泄等方式进行散热 化学调节产热 辐射 体热调节 非蒸发传导通过皮肤 物理调节—散热