塔波特根管扩大针
Talbot s root canal reamer
管腹妊娠
Graviditas tuboabdominalis
管杆摩擦副
Tube and Rod Friction Pair
管杆偏磨
Side wear
Off-center wearing and parting of sucker rod and tubing
off-center wearing of tube and rod
Tube and rod eccentric wear
off-center wearing and parting of sucker rod and t
Eccentric Wearing of Sucker Rod
side-abrasion of rod string