Rig tong line pulley and counterbalances must be inspected at regular intervals.

必须定期检查大钳吊绳的滑轮和平衡铊。

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Simply select the first frame on the time line and re-pose the rig.

只要选择对时间线，重新构成了钻机的第一帧。

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Connect the makeup line (s) and snub line to the rig tongs.

连接猫头绳和钳尾绳到大钳上。

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The goal of the hearings is to examine the design and performance of the drilling rig's blowout preventer, a mammoth set of valves that is the last line of defense against an oil spill.

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Unless Apple plans to make a new line of desktop machines with easy customization options, the Mac will remain a second-class gaming rig.

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