tubing spear的意思|示意

In complicated fishing operation, the tubing is very likely to deform, burst and tear owing to eccentric wear, thereby a kind of fishing spear with sliding cone blocks is developed.

针对复杂打捞中偏磨油管打捞时易变形、胀破或撕裂的难题，研制出特殊滑牙块打捞矛，打捞矛由上接头、矛杆、滑牙块、锁块、销钉、外筒等组成。

Use releasing spear or releasing collar to fish the tubing.

用可退式捞矛或打捞筒打捞油管。