短语词组短语bottom -ash 底灰bottom ash cooler 冷渣器Bottom ash removal system 炉底渣清除系统Incineration bottom ash 关键字Fluidized bottom ash pollution 粉煤灰污染bottom ash hopper 排渣槽;冷灰斗;底灰斗bottom ash sluicing water 底灰冲灰水bottom ash coole 冷渣器 返回 bottom ash