经常能在抹香鲸的胃里发现鱿鱼的嘴.Squid beaks are often found in the stomachs of sperm whales.长度的一抹香鲸的牙齿是20厘米.The length of a sperm whale's tooth is 20 cm.从体形上看, 抹香鲸比虎鲸要小.From the body, the sperm whale is smaller than the killer wha...
其核酸结构为线状双股DNA, 衣壳为二十面体对称,有囊膜.It has linear double strand DNA, icosahedral - capsid and envelope.八面体和二十面体的三角化效果不错,而且也不难实现.Octahedral and icosahedral tessellations work well and are notvery difficult to implement.球状病毒衣壳采用二...