Some hydrogen is absorbed during the acid cleaning and processing procedure of the mechanical plating process.

经过酸洗并机械镀的零件会吸收一些氢。

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Fermentation is often one step in a sequence of food processing operations, which may include cleaning, size reduction, soaking, and cooking.

发酵过程通常是一系列食品加工操作中的一道工序，这些加工过程可包括清洗，粉碎，浸泡和烹饪等步骤。

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After cleaning and sorting the first processing step is blanching.

在清理和分类之后，第一个加工步骤是漂白。

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She said trace contamination with other animals - including pig and horse - could take place at abattoirs and processing plants dealing with more than one species "even with thorough cleaning and good hygiene practice".

BBC: Horsemeat scandal: Public quizzed on contamination

Diversey, No. 121 on the 2010 list of largest U.S. companies, makes commercial cleaning compounds and equipment and its offerings include commercial floor wax, sanitizers for restaurants and food-processing companies, cleansers and deodorizers for restrooms, and industrial degreasers.

FORBES: Diversey To Be Acquired by Sealed Air