The top of the head is specially designed to ease fishing of the logging tool, and is also known as the fishing bell.

电缆头顶部经特殊设计有打捞环，使易于打捞掉在井中的下井仪器。

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The top of the head is specially designed to ease fishing of the logging tool, and is also known as the fishing bell.

电缆头顶部经特殊设计有打捞环，使易于打捞掉在井中的下井仪器。

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