词汇	平均成本费用
释义	平均成本费用 average cost
随便看	Population census data population censuses population census of China population census of chongqing city population census statistics population center population center distance Population center of gravity population centers population central moment population centre population centres population-centric population change population change and demand Population changes population change theory population changing population character population characteristic population charac-teristic population characteristics population characteristics of poor family population characteristic target population characteristic value