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valve oil

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  • 阀油

双语例句

    1. A calibration valve oil for hydraulic shield safety valves was formulated by a base oilobtalned from the distillate of a deep-refining paraffinic crude with qualified additives.
      以深度精制的石蜡基馏分油为基础油,添加具有改善油品性能的添加剂研制了液压支架安全阀校阀油。

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