搜索结果: 1-2 共查到“40 million”相关记录2条 . 查询时间(0.078 秒)
NSF invests $40 million in research infrastructure for earthquake,wind and water hazards（图）
NSF $40 million earthquake wind water hazards
2015/9/25
Recognizing the national need for resilience against multiple natural hazards, the National Science Foundation (NSF) has initiated a new chapter in hazards research with a $40-million investment in Na...
Iridescence Found in 40-Million-Year-Old Fossil Bird Feather（图）
Iridescence 40-Million-Year-Old Fossil Bird Feather
2009/8/31
A team of paleontologists and ornithologists has now discovered evidence of vivid iridescent colors in fossil feathers more than 40 million years old.Iridescence is the quality of changing color depen...