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大象一生能换几次板牙
更新时间: 2020-11-06 00:00:00  

大象一生要换五次板牙。换牙时,新牙从后方推挤旧牙,直到把旧牙向前推出口腔,完成更替。研究人员发现,当大象旧牙未掉而新牙已萌出时,大象的体重好像会更重。如果对不同年龄的母象统计体重,会看到明显的波浪线状分布,而年龄与换牙周期密切相关。

关键词: 大象 一生 板牙

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