rectifying valve

1. Rectifying nipple inversion by using crescent valve plugger and continual traction nipple with home-made external fixture
   新月形瓣充填加自制外固定架牵引矫正乳头内陷
2. Conclusion Rectifying nipple depression in crescent valve plugger and continual traction by home-made external fixture was a feasible method.
   结论：采用新月形瓣充填加自制外固定架持续牵引矫正乳头内陷是一种可行的方法。

noun

1. a thermionic tube having two electrodes

   Synonym:    dioderectifying tube