短語(yǔ)詞組短語(yǔ)multiple retort underfeed stoker [動(dòng)力][冶]多甑式下給加煤機(jī)single retort underfeed stoker 單甑火下加煤機(jī)stoker underfeed 火下加煤機(jī) 返回 underfeed stoker