GB
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中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
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GB 439-1990
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Aviation jet engine lubricating oils 航空喷气机润滑油 |
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Issued Date:1990-12-30 |
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Implemented Date:1991-11-01 |
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Issued by: |
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The Standardization Administration of the People's Republic of China |
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