Pofuna kukonza kuuma pamwamba ndi kuvala kukana kwa machubu 16Mn amakona anayi, mankhwala pamwamba, monga pamwamba lawi, mkulu-pafupipafupi pamwamba quenching, mankhwala kutentha mankhwala, etc. ayenera kuchitidwa kwa machubu amakona anayi. Nthawi zambiri, ambiri mwa ...
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