短语词组短语spray -fluidized drying process 喷雾流化干燥process spray -drying 喷干处理closed spray -drying cycle 封闭式喷雾干燥器系统semiclosed spray -drying cycle 半封闭式喷雾干燥循环系统open spray -drying system 直通式喷雾干燥器系统 返回 spray-drying