每Trace对象包含一组Day对象，定义了当天的最高价、最低价和收盘价。
Within each Trace object is a set of day objects, which define the low, high, and close for that day.
对于个股上海石化股价给出了最高价、收盘价、最低价的GM(1 1)预测值与实际值的比较。
For the stock of a Shanghai chemical plant, a comparison was done between the highest price, closing price, the GM (1.1) of the lowest price, the predicted value, and the actual value.
第3步-监控股票的交易在过去在收盘前30分钟，只有在输入股票收盘接近它的高价格当天强烈。
Step 3 - Monitor the stock's trading during the last 30 minutes before the close, and enter only if the stock is closing strong near it's high price of the day.
有些投资者认为收盘价比开盘价、最高价和最低价重要。
Some investors consider the closing level to be more important than the open, high or low.
有些投资者认为收盘价比开盘价、最高价和最低价重要。
Some investors consider the closing level to be more important than the open, high or low.
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