风险是股票市场与生俱来的特征，而扩散则是风险的自然属性。
Risk is the innate characteristic of stock market, but diffusion is the natural attribute of risk.
在股价时序数据不存在噪音的假设前提下，利用相空间重构技术对中国股票市场的混沌与分形特征进行实证研究。
Under the hypothesis of empty of noise, utilizing technology of phase-space reconstruction to empirically study the chaos and fractal feature of China stock market.
波动性是股票市场的一大显著特征。
Volatility is one of the common characteristics in the stock markets.
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