| 摘要 |
A heat exchanger cooling fin ( 401 ), for use in a fluid flow environment, comprising a fin plate ( 402 ) having a series of substantially mutually parallel louvres ( 403 ), each louvre ( 403 ) having a convex curved surface ( 404 ) facing in the opposite direction to each adjacent louvre ( 403 ), said series of louvres defining a nominal fluid flow path along the series over said convex curved surface ( 404 ) of each louvre ( 403 ).
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