开展规模以下工业抽样调查已有多年历史,抽样调查制度日趋成熟。从单一行政级别看,抽样调查推算结果较好的反映了各地规模以下工业的实际变化。但如果结合某两个级别来看,则仍然存在上下级推算结果不衔接现象,即上级推算结果不等于下级各地区推算结果的汇总,虽然 It has been a long time since China started to carry out the industrial sampling survey of a large scale and the sample survey system has become more mature. Judging from a single administrative level, the results of the sample survey better reflect the actual changes in the industries below the designated size. However, if the two levels are combined, there is still no convergence of the upper and lower projections, that is, the upper projection does not equal the summary of the estimation results of the lower regions, though