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单词 Cosslett process
释义 Cosslett process
[`käs·lǝt ´präs·ǝs]
METALLURGY
A process in which iron or steel articles immersed for 3 or 4 hours in a boiling solution, made by mixing iron filings with concentrated phosphoric acid, H3PO4 (sufficient to form a paste), and then adding to weak phosphoric acid, become coated with a rust-resisting deposit of basic ferrous phosphate.
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