《通俗科技英语文选 第3辑》PDF下载

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  • 作  者:南京大学外文系公共英语教研室编
  • 出 版 社:北京:商务印书馆
  • 出版年份:1980
  • ISBN:9017·962
  • 页数:50 页
图书介绍:

Contents 1

Crossing the Sea 1

Movements of the Earth’s Water 3

Helicopters 6

The Ecosystem Concept 10

Atomic Smashers-50 Years 14

A Pollution Sensor 19

Antarctica 21

Unique Aircraft 25

Future City in the Sea 28

Zhan Tien-you—A Great Patriotic Engineer 32

Three UFOs—How Real Were They? 38