rotary fishing jar

同义词释义

1)rotary fishing jar,旋转打捞震击器2)double-acting rotary jar,双作用旋转打捞震击器3)jar crotch socket,震击打捞器4)fishing jar,打捞用震击器5)drive-down trip spear,震击打捞矛6)center jar socket,震击打捞筒