| 释义 |
stomodeum 释义 [胚] 口凹;[胚] 口道 变形 stomodea/stomodeums 复数 例句 1·In the course of development, the invagination of stomodeum occurs earlier than that of proctodeum at the third and the sixth nauplius stages respectively. 在发育过程中,口凹是在第三期无节幼虫时内陷形成,而原肛是在第六期无节幼虫时内陷形成的,所以口凹的发生早于原肛的发生。
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