Ⅰ. Background Information 1. Richard Wagner (1813-1883), the greatest composer of German opera, made a major addition to the nature of opera through his writings about and the creation of music drama. Music drama combines singing, orchestra, verse, story, drama and spectacle. Wagner's works include the \The Ring of the Nibelung\ (1853-1874), a set of four operas based on historical German stories. For an introduction to Wagner as well as other resources on the Internet, please visit

1-1材料力学的任务及研究对象(The tasks and research objects of mechanics of materials) 1-2变形固体的基本假设(The basic assumptions of deformable body 1-3力、应力、应变和位移的基本概念 ( Basic concepts of force、 stress、 strain and displacement) 1-4杆件变形的基本形式(The basic forms of deformation)

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 (Anolsis of throo dimons stroas stoto)

The stability, or instability, of the milk fat emulsion is very significant with respect to many physical and chemical characteristics of milk and dairy products. The stability of the emulsion depends strongly on the integrity of

I want to talk for a few minutes with the people of the United States about banking -- to talk with the comparatively few who understand the mechanics of banking, but more particularly with the overwhelming majority of you who use banks for the making of deposits and the drawing of checks

Lactose is the principal carbohydrate in the milks of all mammals; non mammalian sources are very rare. Milk contains only trace amounts of other sugars, including glucose(50 mg\), fructose, glucosamine, galac- tosamine, neuraminic acid and neutral and acidic oligosaccharides The concentration of lactose in milk varies widely between species(Table 2.1). The lactose content of cows'milk varies with the breed of cow

1、早期的太阳系 The Early Solar System Billions of years ago, out of a swirling mass of gas and dust, evolved a system of varied planets hurtling around a nuclear-powered star-our solar system. One of these planets, and one only, give rise to complex life forms. Over time

Yesterday, December 7th, 1941 -- a date which will live in infamy -- the United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan. The United States was at peace with that nation and, at the solicitation of Japan, was still in conversation with its government and its emperor looking toward the maintenance of peace in the Pacific

Mr. President, Dr. Conant, members of the Board of Overseers, Ladies and Gentlemen: I am profoundly grateful, touched by the great distinction and honor and great compliment accorded me by the authorities of Harvard this morning. I am overwhelmed, as a matter of fact, and I am rather fearful of my inability to maintain

The nature of language A definition: Language is human speech; the ability to communicate by this means; a system of vocal sounds and combinations of such sounds to which meaning is attributed, used for the expression or communication of thoughts and feelings; the written representation of such a system. (Webster's New World Dictionary)