The adult jaw is a vastly different environment from the embryonic version, however, and scientists have been unsure whether it would provide the correct signals to a developing tooth.
英
美
释义
但发育成熟的颌与胚胎时期的颌相比,是个完全不同的环境,因此,科学家一直无法确定,成熟的颌是否可以提供正确讯号给发育中的牙齿。
把海词放在桌面上,查词最方便
触屏版
|
电脑版
©2003 - 2024 海词词典(Dict.cn)
立即下载