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来自MSN
2 天
为什么苍蝇这么难捉?它搓手时真会把头拧下来?科学:没了头也不 ...
谈到苍蝇总是令人厌烦地四处飞舞,它们似乎极难被抓住,刚轰走一会儿又飞回来。这是为何呢?原来苍蝇拥有特殊的身体构造。其眼睛是由约 4000 个六边形小眼组成的复眼,能实现 360° 全覆盖的视野,在苍蝇眼中,世界仿佛是慢动作,让它们能轻松察觉危险。
来自MSN
5 天
到底照X光片、CT还是MR?莫慌,专家说不同情况照的还不一样.......
影像检查是为了更好地评估身体健康状况,发现疾病根源,从而排除危险因素。 人们因为不舒服到医院,根据部位,医生经常会开具相关的影像检查。那么,如何选择影像检查,多知道一些知识也是非常好的。
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