sciencedirect数据库
ScienceDirect is the world\'s leading source for scientific, technical, and medical research. Explore journals, books and articles.www.sciencedirect.com
- 2015-12-19 - 收藏
springer数据库
Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.link.springer.com
- 2015-12-19 - 收藏
splashbase官网
Search & discovery platform for free, do what you want, hi resolution photos & videos from travelcoffeebook, startupstockphotos, littlevisuals, gratisography, getrefe, jaymantri, superfamous, mazwai, unsplash, snapographic, moveast, snapwiresnaps, newoldstock, splitshire, camarama, mmt, lifeofpix, crowthestone, skitterphoto.
- 2015-12-02 - 收藏
SpeedDate交友网
SpeedDate.com于2007年10月建立，现在已经发展成为世界第一的网络速会服务网站，拥有数百万分布于190个不同国家和地区的用户，每天举办超过10万场网络速会，而且参与人数还在以每月50%的速度迅速增长。参与网络速会的单身用户能够在3分钟内，凭借视频，音频以及即时信息取得联系；同时，也可以通过一些流行软件，比如Facebook、MySpace、Bebo和meebo等访问公司网站。www.speeddate.com
- 2015-11-24 - 收藏
ArtGraphica网站
ArtGraphica 网站是一个致力于提供优质的艺术教育和来自不同背景和年龄段的艺术家们的作品，主要涉及写生、素描、油画、铅笔、水彩、粉彩、亚克力、木炭、水墨和绘画理论课程等。For more than ten years artgraphica has provided a free education for art students and a great resource for teachers, helping educate artists of all ages and abilities to improve sketching drawing and painting skills.
- 2015-11-24 - 收藏
