[专利] 专利权人和发明人协会

Patents and Inventions

By Jerilyn Watson Broadcast: October 6, 2003 (THEME) VOICE ONE: An office in the United States government has helped protect 1)the property rights of inventors for more than two-hundred years. Its job

发表于:2018-12-07 / 阅读(38) / 评论(0)

VOA2003（下）-美国人文故事

英语口语大赢家Topic156:四大发明The Four Great Inventions

丹尼尔和阿美在观看中国古代的四大发明。丹丹觉得那些都是简单的东西，没有什么意义。其实他们的发明者都是一些很聪明的人。那最后丹丹的观点有没有改变呢？ Listen Read Learn May: There are so many people that the tickets are all sold out! Daniel: Luckily we

发表于:2018-12-26 / 阅读(27) / 评论(0)

英语口语大赢家

英语大赢家上册 156.Topic 4四大发明 The Four Great Inventions

Listen Read Learn May: There are so many people that the tickets are all sold out! Daniel: Luckily we got the last two. May: Look, Danny. The Four Great Inventions! Daniel: Gunpowder, compass, the paper making, and the printing. May: I really admire

发表于:2018-12-31 / 阅读(23) / 评论(0)

英语大赢家上册

THIS IS AMERICA - Patents and Inventions

THIS IS AMERICA - October 14, 2002: Patents and Inventions By George Grow VOICE ONE: An office of the American government has helped to protect the legal rights of inventors for two- hundred years. Th

发表于:2019-01-02 / 阅读(84) / 评论(0)

This is America

VOA慢速英语2010年-Economics Report - Inventors Given Hop

This is the VOA Special English Economics Report. Recently, the United States Supreme Court decided a case on the property rights of inventors. The question was whether a business method is enough of an invention to receive a patent. Patents are a fo

发表于:2019-01-11 / 阅读(35) / 评论(0)

2010年VOA慢速英语(七)月

美国国家公共电台 NPR Broad Institute Wins Big Battle Over CRISPR Gene-Editing Patent

STEVE INSKEEP, HOST: We have the story this morning of a patent - a very, very lucrative patent. DAVID GREENE, HOST: It is for a tool called CRISPR. Sounds like a kitchen instrument, doesn't it? But it's actually a high-tech gene-editing tool. INSKEE

发表于:2019-01-16 / 阅读(42) / 评论(0)

2017年NPR美国国家公共电台2月

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