短語(yǔ)詞組短語(yǔ)secondary y flow 次級(jí)流secondary mass flow rate 引射量secondary current flow 二次湧流secondary shear flow 二次剪流secondary -flow 二次流動(dòng)secondary steam flow rate 二次蒸汽流量a secondary axial flow 二次軸曏流 返回 secondary flow