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单词 local action
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local action
local action n. chemical activity that occurs on the surface of an electrode in a cell or battery, as distinct from that involved in the flow of current or the maintenance of a potential.Local action occurs chiefly as a result of impurities in the metal of the electrode, which effectively form miniature voltaic cells with the bulk metal; the result is corrosion of the electrode even when no current is being drawn.
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local action1835
1835 M. Faraday in Philos. Trans. (Royal Soc.) 125 270 The more gas which is generated upon these surfaces, the greater is the local action and the less the transferable force.
1841 W. T. Brande Man. Chem. (ed. 5) 297 In the common battery..much local action takes place upon the zinc plates without contributing to the circulating forces.
2010 J. Bird Electr. & Electronic Princ. & Technol. (ed. 4) iv. 31/2 (caption) In a simple cell two faults exist—those due to polarisation and local action.
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