用一个敏捷的很轻的力，将印模坐放在落鱼的顶部。

The impression block is landed on top of the fish with a sharp, light force.

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通常在打捞作业中所使用的一种井下工具。它用来制作落鱼的顶部和外表面，以便使打捞筒或类似的打捞工具能够干净地与落鱼接合。

A downhole tool routinely used in fishing operations to prepare the top and outside surface of a fish, generally to allow an overshot or similar fishing tool to engage cleanly on the fish.

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