obturate

/ob-tuh-reyt, -tyuh-/US // ˈɒb təˌreɪt, -tyə- //UK // (ˈɒbtjʊəˌreɪt) //

钝化,钝化的,钝的,圆钝的

Definitions

v.有主动词 verb

1
ob·tu·rat·ed, ob·tu·rat·ing.
- : to stop up; close.
- : Ordnance. to close so as to prevent a flow of gas through it, especially the escape of explosive gas from a gun tube during firing.