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Anunusualmodeofcorrosionincoppertubes,whicharewidelyusedinrefrigeratingandair-conditioningaams,wasdetectedduringtheearlystageofserviceandinleakagetestsconductedaftermanufacturing[l--161.Themorphologyofthiscormsionissimilartoanat’snestWhenviewedincros...