通过引进表示经济衰退的解释变量，我们检验了中国实际季度GD P序列当中存在的非对称性，说明这些非对称性主要是由模型的非线性结构形成的。
By inducing the measurements of recession degree, we have tested the asymmetry in quarterly real GDP data of China's economy, and showed that it is caused by the nonlinear structural model.
相关文献表明，发达经济体宏观波动非对称性的研究大都在经验上证实了宏观经济波动的非对称性，这些研究都是基于严格的计量检验和估计理论。
Unfortunately, from the scanty researches which focus on Chinese economic fluctuations, one can not find any test of whether fluctuations are asymmetric but only the estimation.
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