liuxilin1215 发表于 2019-3-1 17:26:56

ISO 10438-4-2007 Petroleum, petrochemical and natural gas industries — Lubrica

ISO 10438-4-2007 Petroleum, petrochemical and natural gas industries — Lubrication, shaft-sealing and control-oil systems and auxiliaries — Part 4: Self-acting gas seal support systems


admin 发表于 2019-3-3 19:53:26

谢谢您的分享,金币已奖励!
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