... 自立模拟:self-contained simulation 自立的钻机:self-erection rig 自立的:self-erecting ...
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This standard specifies the technical requirements special regulations on the inspection lifting and laying down of self-erection mast of land rig.
本标准规定了陆地钻机自升式井架起放作业的检查、起升和下放技术要求及特殊规定。
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