fixed double chamber bed 双室固定床

high-velocity double chamber bed 高流速双室床

high-velocity double-chamber bed 高流速双室床

double chamber-layer floating bed 双室双层浮动床

double-chamber fixed bed 双室固定床

double-chamber floating bed 双室浮动床

double chamber floating bed 双室浮动床

double chamber fluidized bed 双室沸腾床

double chamber double-deck floating bed 双室双层浮动床