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价值线估测根据价值规律，价格围绕价值上下波动，价格和价值会发生一定背离，但幅度不会太远。对上证指数的图线作价值趋势分析，得到线型趋势l，可以近似的看作指数围绕趋势l振荡波动。通过平行辅助线l＇，可以看出指数波动下限在l＇附近，由此可以推断２００２年指数运行的
Value Line Estimation According to the law of value, prices fluctuate around the value of the price and value of a certain departure, but the magnitude will not be too far away. The trend line of the Shanghai Composite Index for value trend analysis, linear trend l, can be approximated as an index around the oscillation l oscillation. Through the parallel auxiliary line l ’, we can see that the lower limit of exponential volatility is around l’, so we can infer that the index running in 2002