sludge extractor

直角三角形_馆档网 ... "淤渣船,污物船"," sludge boat" "淤渣抽取器"," sludge extractor" "出渣孔"," sludge hole" ...

在线词典--水电知识网-... ... pile extractor 拔桩机 sludge extractor 污泥分离池 vibratory extractor 振动拔桩机 ...