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Dry end and wet end circulation oil 、gear oil and hydraulic oil will sample from central oil tank for relating technical analysis once every three months in the first half year, and per 6 months later. |
中文意思: 纸机循环油、齿轮油及液压油前半年每三个月,以后每六个月从中央润滑站抽取油样,免费做相关技术检验。 |
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