机械工程专业英语第6课.ppt

机械工程专业英语第6课.pptTECHNICAL ENGLISH
MECHANICAL ENGINEERING
YAN NU
1
We live in a world of man-made materials. Steel, aluminum, plastics, ceramics, copper, glass, and all the others are the concrete substance of our ideas, our designs, our product plans and blueprints.
Of course, materials have always been vital to human civilization. There of humanity’s earliest eras are called the Stone Age, the Bronze Age, and the Iron Age, because the civilization of each was almost entirely dependent on the materials after which the era was named.
6 MATERIALS
vital ['vaitl] , adj. 生死攸关的, 重大的, 生命的, 生机的,
至关重要的, 所必需的
2
But now, in the twentieth century, materials-not just one, but many –have become a most important factor on which the advance of technology and industry depends. Our progress in space, in electronics, and in atomic energy is directly linked to the solution of crucial materials problems. Even in many of the less glamorous manufacturing fields, materials are of major importance in the planning, design, and manufacture of products.
6 MATERIALS
glamorous ['ɡlæmərəs] adj. 富有魅力的, 迷人的
You are looking rather glamorous.
3
Whether it is a rocket nose cone that must withstand the tremendous heat of re-entry into the atmosphere, or a washing machine, the use of proper materials is indispensable to the success of the product.
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