新配套或大修后第一次组装的井架，起放井架作业应在厂方的指导下完成。
Operation of lifting or laying down a new mast or overhauled mast shall be carried out under the instruction of the manufacturer's representative.
新配套或大修后第一次组装的井架，起放井架作业应在厂方的指导下完成。
Operation of lifting or laying down a new mast or overhauled mast shall be carried out under the instruction of the manufacturer's representative.
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