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oil physico-chemical analysis
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oil physico-chemical analysis
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oil physico-chemical analysis
油品理化分析
用统一规定或公认的试验方法,分析检验石油产品理化性质的试验过程。是石油产品生产、销售、使用过程中的质量控制手段。
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subinvariant subgroup
subinvariant subgroup series
subirrigation/infiltration irrigation
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