hegar dilators造句

例句与造句

1. Hegar introduced the dilators in 1879 . Hegar dilators are widely used in gynecology to open up the cervix.
2. Among the many techniques and instruments he developed were Hegar's sign and Hegar dilators, as well as Hegar's operation, an operation for repairing a ruptured perineum.
3. It's difficult to find hegar dilators in a sentence. 用hegar dilators造句挺难的