Under all circumstances, visual inspection of the drilling line must take precedence over the predetermined slip and cut procedure.
在任何情况下，在预定滑大绳或倒大绳之前，都要先对大绳进行直观检查。
Under all circumstances, visual inspection of the drilling line must take precedence over the predetermined slip and cut procedure.
在任何情况下，在预定滑大绳或倒大绳之前，都要先对大绳进行直观检查。
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