打捞矛 fishing spear
- 用可退式捞矛或打捞筒打捞油管。
Use releasing spear or releasing collar to fish the tubing. - 带引鞋的可退式捞矛在大直径套管内打捞时能将鱼头扶正,便于捞矛进入鱼头进行打捞作业。
Releasing spear with a shoe guide should erect fishing head in the large diameter casing, so the spear can insert fishing head for a fish practice.
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