单词：electric sensing devices
单词：electric sensing devices 相关文章
Every year, millions of monarch butterflies fly thousands of miles to alight in one specific forest in Mexico. How do they know what direction to flutter? Scientists had thought that an insect GPS system in their brains steered them in the right dire
Scientific American(九)月
Thomas Edison, 1847-1931: America's Great Inventor Edison is remembered most for the electric light, phonograph and his work with motion pictures. ANNOUNCER: Welcome to the VOA Special English program, People in America. Today, Sarah Long and Bob Dou
名人轶事
American inventor John Goodenough first started working on battery technology more than 40 years ago. Goodenough actually co-invented lithium-ion batteries in 1980. This eventually led to a revolution in the electronics industry because those devices
2017年VOA慢速英语(五)月
ANNOUNCER: Welcome to the VOA Special English program, People in America. Today, Sarah Long and Bob Doughty tell about the inventor Thomas Alva Edison. He had a major effect on the lives of people around the world. Thomas Edison is remembered most f
VOA慢速英语2007年（三）月
PEOPLE IN AMERICA - Thomas Edison, 1847-1931: America's Great Inventor ANNOUNCER: Welcome to the VOA Special English program, People in America. Today, Sarah Long and Bob Doughty tell about the inventor Thomas Alva Edison. He had a major effect on th
2012年VOA慢速英语(八)月
By Jessica Berman Washington 13 February 2008 Scientists in the United States say they have developed fabrics that can generate electricity. Researchers say they have harvested enough electricity to power small electronic devices such as an mp3 playe
VOA常速英语2008年（二月）