If scientists were to detect a 600-foot-wide asteroid ten years in advance, Yeomans says, it could be deflected with a two-ton projectile traveling six miles per second.
约曼斯说，如果科学家能提前10年探测到一颗600英尺直径的小行星，就可以使用一颗两吨重，每秒速度6英里的弹道飞行器使其偏离轨道。
Second quarter 2014 ending inventory at cost per foot is expected to decline in the mid teens, or mid single-digits excluding the change in ownership terms.
2014第二季度结束的每米成本库存预计将在中期青少年下降，或个位数排除在所有权方面的变化。
Second quarter 2014 ending inventory at cost per foot is expected to decline in the mid teens, or mid single-digits excluding the change in ownership terms.
2014第二季度结束的每米成本库存预计将在中期青少年下降，或个位数排除在所有权方面的变化。
应用推荐