某海底输油管道环焊缝断裂。
在爆炸发生后两日，钻井平台沉入海底，连接海床油井的输油管道破裂。
Two days after the explosion, the rig sank to the ocean floor, and a pipe connected to the well on the sea floor broke.
确定了可在海底干式仓内切割输油管道的金刚石绳锯机的总体方案，并对主要部件进行了设计计算。
The total scheme of diamond wire saw that can cut off the submarine oil pipeline in dry cabin was established and the main assemblies were designed.
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