protoconid

protoconid

简明

n.小原锥；下原尖

网络释义
专业释义

1
[脊椎] 下原尖
... 下游物流 downstream 下原尖 protoconid 下闸门 tailgate ...
2
小原锥
... 胎壳；初房 protoconch 小原锥 protoconid 原小锥 protoconule ...

百科

Protoconid
Many different terms have been proposed for features of the tooth crown in mammals.

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