短語詞組短語design for coal -preparation plant 選煤廠設(shè)計coal -handling and preparation 煤加工制備pulverized -coal preparation 粉煤備制preparation coal -water mixture 水煤漿制備coal preparation system -new technology-application 備煤系統(tǒng)新技術(shù)應(yīng)用heavy -media coal preparation process 重介選煤工藝high -efficient coal preparation plant 高傚選煤廠multi -story coal preparation building 多層選煤廠房 返回 coal preparation