单词	branch duct
释义	branch duct branch duct branch duct: installation branch duct An air duct which branches from a main duct; at this point the main duct is reduced in cross-sectional area.
随便看	ccb&m ccbm ccbmr ccbms ccbn cc bn3 ccbnep ccbno ccbo ccboa ccbobb ccboe ccbog ccboq ccbor c.cb.orf.bed.43 ccbp ccbpa ccbpi ccbpw ccbq ccbr ccbres c-cbrn ccbrn

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