crop
2020-9-20 22:45
2009年，美国能源部开始通过高级研究计划局-能源(或ARPA-E)计划为能源研究提供资金。其目标是比传统的联邦努力承担更多的风险，并帮助新的可再生能源技术起步。由于回报缓慢，私人投资一直在下滑，但清洁能源的巨大社会效益被认为是政府支持的正当理由。当时的希望是，这笔资金可以加快新技术成熟的时间表，使私人投资者发现这项......
2009-6-16 11:30
A phoenix-shaped crop circle has appeared in the UK, The Daily Telegraph of London reported. Crop circle experts believe this latest crop circle may coincide w......
2009-4-20 10:31
According to British media reports, the mysterious crop circle phenomenon is still a mystery, as time goes on, when you gradually think crop circles are a thin......
2007-11-26 13:21
"Alien" masterpiece - Crop circles, this picture collection of many classic crop circles ~~~~~~~ '