highly refined oil
... highly porous 高孔隙度的 highly refined oil 深度精制油品 highly saline drilling fluid 高矿化度钻井液 ...
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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。
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.
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