Yes, they are used for cooling air, water, lubricating oil etc.

是的, 它们用于冷却空气, 水和润滑油等.

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With the advancement of warships, new materials and structure of water - lubricating bearings must be investigated.

为了满足舰船日益提高的隐蔽性要求, 必须开展水润滑轴承的新型轴承材料和轴承结构研究工作.

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