1. Ọ na-anakwere nhazi nke counter-flow, the heat exchange tube adopted a serpentine structure, the number of heat exchange tubes is buru ibu, okpomọkụ mgbanwe na gas mgbasa ebe buru ibu, gas na-eguzogide dị obere, na okpomọkụ mgbanwe arụmọrụ dị elu. ; oghere ime nke ngwa nju oyi bu e...
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