If you had been to the pipe yard or machine shop, you might have seen such fishing tools.
要是你去过管子站或机厂,你可能见到过这样的打捞工具。
Pipe which has been checked for holidays at the double-joint yard shall be re-checked prior to installation in the trench.
双面漏涂检查过的管子在下管沟安装之前再次检查一遍。
The pipe yard made many kinds of fishing tools 1ast year.
去年管子站制造了许多种打捞工具。
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