double drum boiler

进出口行业词汇英语翻... ... double-dragon lampstand 双龙灯座 double-drum boiler 双汽包锅炉 double-drum drier 双滚筒干燥 …

航海及海运专业英语词... ... double-diode pentode 双二极五极管 double-drum boiler 双锅筒锅炉 double-drum winch 双卷筒绞 …