词汇	air-core
释义	air-core adj.空心的
随便看	national economic planology national economic policy national economic power national economic regulation national economics national economic safety national economic security national economic stability national economic statistics national economic strength national economic structurology national economic sub-system national economic system of socialism national economic valuation National Economic Welfare national economic zones national economies national economy national economy accounting National economy and social development national economy appraisal national economy balance national economy complex national economy coordination national economy evaluation