hegar's dilator格: check; squares formed by cro ...氏: family name; surname扩张: expand; enlarge; spread器: implement; utensil; ware贝利氏扩张器: bailey dilator下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:海格氏扩张器，即可在微信中查询翻译
