BOLL指标是根据统计学中的标准差原理设计出来的一种非常简单实用的技术分析指标，BOLL指标又叫布林线指标，是研判市场运动趋势的一种中长期技术分析工具。-BOLL indicators are designed according to the principles of statistical standard deviation in a very simple and practical technical analysis indicators, BOLL indicators known as Bollinger Bands indicator is judged that the market movement trend of a long-term technical analysis tools.