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NL - mud lubricant is an additive agent used in oil drilling.
泥浆润滑剂是应用于油田钻井的泥浆添加剂.
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The process of wide temperature swift aluminium anodizing and it's mechanism of additive agent are studied.
研究了宽温快速阳极氧化工艺,对宽温快速阳极氧化添加剂的作用机理作了分析.
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