Teething troubles

十月 23, 1998

(Photograph) - Richard Smith displays a dental measuring system, using a digital camera and computer analysis, he and other members of Sheffield University's child health department have developed.

请先注册再继续

为何要注册?

  • 注册是免费的,而且十分便捷
  • 注册成功后,您每月可免费阅读3篇文章
  • 订阅我们的邮件
注册
Please 登录 or 注册 to read this article.
ADVERTISEMENT