Along with the development of domestic oil-field drilling technologies, considerable progresses have been made domestic O . C . T . G.

  • 随着我国石油钻井技术的发展,石油专用管材的生产、技术 、 质量及装备水平有了长足的进步.

  • 互联网摘选 2025-01-20 13:19:06

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