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清洗剂和预膜剂
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清洗剂和预膜剂
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工学
清洗剂和预膜剂
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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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distribution according to need
distribution according to work
distributional complexity
distributional derivative
distribution amplitude
distribution and deployment
distribution and utilization automation system
distribution-assignment
distribution association
distribution automation
distribution cable feeding pillar
distribution cable joint
distribution cable line
distribution center
Distribution center management
distribution center planning
distribution chart of frequency
distribution chute
distribution constant
distribution corporation
distribution curve
distribution density
distribution derivative
distribution enterprise management
distribution factor
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