drum type watertube boiler的意思|示意
美 / /
英 / /
汽包式水管锅炉
drum type watertube boiler的网络常见释义
锅筒型水管锅炉 锅筒型水管锅炉 drum type watertube boiler 焊接锅筒形状偏差 distortion of welded drums ..