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cleaning agent and pre-membrane agent
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cleaning agent and pre-membrane agent
Encyclopedia
工学
清洗剂和预膜剂
释
cleaning agent and pre-membrane agent
清洗剂和预膜剂
一类具有清洗作用的溶解性化学品称为是清洗剂。在金属表面清洗后加入一定量的水溶解性化合物,能在金属表面预先形成保护膜的一类化学品,称为预膜剂,也称为钝化预膜剂。
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subhymenium
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Subic Bay
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subidempotent radical
subidempotent torsion radical
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Su Bingqi
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subinvariant subgroup
subinvariant subgroup series
subirrigation/infiltration irrigation
Subito-documents from libraries
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subject assessment of audio quality
Subject Authority Database of National Library of China
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