可汗学院Khan Academy
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
- 2013-11-17 - 收藏
中国发明专利技术信息网
中国发明专利,专利技术www.1st.com.cn中国发明专利,专利技术,发明,专利,创新,革新,技术,点子,专利转让,技术转让,专利检索,专利法规,发明论坛,patent,invent,invention,innovation,idea
- 2013-11-02 - 收藏
American Society for Microbiology
The American Society for Microbiology (ASM) is the oldest and largest single life science membership organization in the world. Membership has grown from 59 scientists in 1899 to more than 39,000 members today, with more than one third located outside the United States. The members represent 26 disciplines of microbiological specialization plus a division for microbiology educators.美国微生物学会（American Society for Microbiology，简称ASM），是生命科学领域中全球最大且历史最悠久的会员组织。会员人数从1899年的59名已发展到现今超过43000名，其中超过三分之一的会员来自
- 2013-10-22 - 收藏